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Mometamax warning

I know that Golden Retrievers often experience ear problems, so I thought I would post this account about my recent scary experience with the ear medication, Mometamax.

Fred was on a 10-day course of Mometamax for wax and inflammation in his ears. I never take or administer any medication without first reading all the fine print, so I noted the warning that Mometamax can cause deafness or hearing loss in some dogs. It concerned me, of course, but since Fred’s ears had been examined before we started the drug, I knew that his ear drums were in tact and therefore tried to dismiss my worries. He also had his teeth cleaned 3 days after starting the Mometamax, and while he was anesthetized, they once again examined and cleaned his ears.

I had begun to notice that Fred seemed vaguely disoriented and not quite himself midway through the course of Mometamax, but I thought he might be reacting to the trauma of the teeth-cleaning, so I just watched him carefully. In most ways, he seemed fine. I couldn’t put my finger on what seemed wrong about him.

Three days after the final Mometamax treatment, we called Fred’s name to head up to the house from the barn after feeding the horses. Fred was, as usual, waiting in his dog bed in the tack room. He didn’t react at all to his name. We started calling him louder and louder, and he still didn’t react. For a very bad moment, we thought he was dead. When I touched him, however, he jumped up, ready to return to the house with us. Instantly, I remembered the warning on the Mometamax and realized that he was totally deaf.

I ran to the house and reread the Mometamax fine print to see whether there was any protocol for treating hearing loss, caused by the drug. It was past midnight, so I was on my own. The fine print recommended flushing the ears with nonotoxic ear wash, so I did that twice with Epi-Otic, although I worried that so much time had elapsed since his last Mometamax dose it might be hopeless. We tried various tests (saying Fred’s name without moving or giving him any other cue and calling him from other rooms), and he seemed to be able to hear if we spoke loudly enough.

In the morning, I called the vet to report what had happened and find out whether there was anything further I could do. His recommendation was that we wait several days before flushing Fred’s ears again or putting anything at all in them. Meanwhile, Fred has shown convincing signs that he can hear, although I’m not sure whether he’s got the stellar hearing he had before this happened. He does seem to be improving, though.

Sooooooo . . . here’s my 2 cents: watch out for Mometamax and take that warning about hearing loss very seriously. It’s one thing to have a dog lose its hearing due to old age, but quite another to believe you have done something to CAUSE the hearing loss. I’m tremendously relieved that Fred appears to be recovering.


1 valerie { 01.12.10 at 12:06 am }

That must have been very frightening. Thank you for the warning.

2 Matt { 02.01.10 at 10:30 pm }

Thank you for writing this. Your story is the exact same thing that is happening to my bullmastiff right now. I questioned why she couldn’t hear things and then slept as “if she were dead” and then quickly looked at the bottle of Mometamax for warnings. There were none, so I quickly got on the internet. I still can’t believe my vet perscribed such medication.

3 Joanne { 02.01.10 at 10:51 pm }

I hope that vets are reporting these experiences to whatever agency compiles them and controls veterinary medications. I spoke to my vet at length about my alarm and displeasure. The good news, however, is that Fred has fully recovered his hearing.

So sorry you are faced with this trauma, too. I hope she has a speedy and complete recovery.

4 Jack { 02.26.10 at 3:54 pm }

Ginger our Yellow Lab has always had great hearing. She went in for her annual checkup and the vet said she had a slight yeast infection in her right ear. We questioned this because she has never had any ear problems in 12 years. We were directed to squeeze the fluid in EACH ear for 2 seconds once a day for 7 days. We did this for 5 days and stopped. Now after only 5 days she is stone deaf. We do not believe our Vet. was aware of the dark side of this med ication because he called the Manufacturer and said in rare cases only. Who do you call /contact to get this drug recalled, or to understand why this drug kills the hearing . Please e-mail me with info. jackccpi@aol.com This happened 2-13-2010

5 Joanne { 02.27.10 at 11:13 am }

I’ve been emailing back and forth with Jack, who lives in Hawaii and is not a regular blog reader. He must have found us by doing a search for “Mometamax” and “deafness”. Wanted you all to know that I am forwarding your messages to him, and he is very grateful for the help. I’m grateful, too!

One thing we can all learn from all this information is that regular ear care is critically important. If the cure is so dangerous, avoiding the problem is all the more urgent. And Goldens are so susceptible to ear problems!

(My vet – who would not like to be named in this context – once jokingly recommended that I super-glue the ears of a previous Golden together over his head.)

If you get into an ear mess with your dog, you might want to ask about DMSO as an alternative to aminoglycosides. We have used that in the past and had no problems, but there are probably reasons (besides noxiousness) why some vets seem not to prefer it.

6 valerie { 02.27.10 at 12:55 pm }

Perhaps someone could post a new blog topic about routine ear care?

7 Joanne { 03.03.10 at 11:31 am }

Here’s an update on Ginger from Jack, for those of you who are wondering:

Hi Joanne, Ginger has not shown any sign of improvement. The Vet has been calling us every two days following up. He has consulted with another doctor on the mainland and they have put her on steroids for a two week period and we are to flush her ears (now) every other day with saline solution. Today per his request took her in for a look in her ears. All looked good.(normal healthy) We also took her in for acupuncture.( another Vet) Dr. F. said in most cases she has treated in the past, three treatments should do it if her hearing is going to return. Ginger has responded well to acupuncture in the past for other things.
Again Thanks for the follow up

8 Joanne { 03.23.10 at 1:18 am }

In case anybody is following the story of Jack and his dog Ginger’s Mometamax experience, here’s the latest from him:

The update on Ginger
The vet that gave her the Mometamax called and got another opinion and prescribed Prednisone 20 mg twice a day for 5 days then once a day for 5 days and then one every other day (5) more. at about day 8 she started having trouble holding her urine so we spoke with the Dr. reduces doses in half. We continued to rinse her ears out every three days with saline solution Now at the same time I consulted with the acupuncturist and she says other dogs in the past have regained their hearing at about the third treatment if it is going to work so we started that treatment. Ginger had her third acupuncture on 3-9-10 in the morning at about 1:00 PM. after lunch she started running around the office all excited like a puppy she was starting to hear low tones off and on. session #4 on 3-18-10 no change until that evening and hearing greatly improved again all excited and happy. She goes in for another treatment on 3-25-10 and hope for the best.Her hearing is not anywhere like it was but able to understand basic voice commands.The original Vet. still cannot understand why she lost all hearing, he says she did not have any ear drum punctures etc. Ginger is somewhat unusual as a Lab we go to the beach at least three times a week and she swims and this was the first yeast infection only in the right ear and was mild in fact her very first infection of any kind in 12 years.
Aloha Jack

9 Kres { 05.03.10 at 1:38 pm }

I had the same experience with Otomax.Almost total deafness. I flushed bi=oth ears and I do believe he can hear now. Not great hearing but it is some hearing.

10 barb { 05.05.10 at 1:22 pm }

My dog just lost his hearing after being prescribed Mometamax for a yeast infection in his ear. He couldnt hear anything for the first week, but now, about 3 weeks later, has very slight hearing. He doesnt hear me when I call him from another room, I have to be right in front of him. He doesnt hear me knocking on the car window if he is inside it, so what ever hearing he has is very slight. Im feeling awful about this, and putting this medication in his ears – I cant believe the vet prescribed this!

11 Joanne { 05.05.10 at 2:39 pm }

Kres and barb, I am so sorry about your dogs and about what you must be going through. Just a taste of it was plenty enough for me. I was devastated by the thought that I had rendered Fred deaf by my own hand.

There has been so much response to this thread that I feel pretty certain that Mometamax is far too dangerous to be prescribed by vets. At the very least, we should all be mentioning the perils of this drug to our vets, whether or not it has been prescribed for our own dogs. It needs to come off the shelves.

12 Jane { 05.19.10 at 4:56 pm }

My 11-year-old Husky mix is now totally deaf after being on Mometamax for 7 days. She had excellent hearing prior to using the drops but developed ear infections in both ears, for which the vet prescribed Mometemax. I noticed that she was acting different after the first few days of application, but because I’m recovering from surgery myself, I didn’t pay too much attention to her off behavior. Then, on day seven, I realized that she couldn’t hear me. That’s why she was ignoring my commands and not acting like her usual self. I can stand behind her screaming and clapping my hands, and she won’t even know I’m there. It’s terrible! I feel awful about putting those drops in her ears. I took her to the vet this morning, and she said her ears look fine. She flushed them out with saline solution and said that her hearing WILL return in a few weeks, slowly but surely. She said WILL return, not “should” return or “will probably” return. So I’m very hopeful that CoCo will regain her hearing in time. I’m telling everyone I know who has a dog about this medication and what can happen. My vet said that she’s only had three dogs in the past 15 years that have lost their hearing from Mometamax. But when your dog is one of the three (now four), that’s no consolation. She said that all three dogs got their hearing back. So, again, I’m hoping CoCo can hear again one day soon.

13 Joanne { 05.20.10 at 11:42 am }

Jane, so sorry to read about your experience with CoCo and Mometamax. I fully know the awful trauma – and I am no longer sure that Fred’s hearing is as good as it was before he temporarily lost it due to Mometamax. I hope that CoCo is as lucky as Fred, though.

Given all of the bad experiences reported on this thread, I wouldn’t run the risk of using Mometamax on any dog, regardless of statistics. Everybody needs to urge their vets to report these incidents and get the drug off the shelves.

14 valerie { 05.20.10 at 9:14 pm }

Jane, I too am very sorry to hear about CoCo. We need to somehow raise awareness of this on a broader scale. Any ideas anyone?

15 pat { 05.21.10 at 7:13 am }

I’m asking at St Mary’s if they use this drug and telling them about what I’ve seen on this blog.

16 Belinda { 05.29.10 at 8:10 am }

Our English Bulldog, Roxey, had a very bad ear infection. She was given Mometamax. Before the infection, she would hear me come in the backdoor and give me just enough time to put my things down and would start barking expecting to be let out of the bathroom where she stays while we are not at home. A few days after being doctored I noticed that she wasn’t fussing at me when I didn’t let her out right away as a matter of fact she didn’t do anything until I opened the bathroom door and loudly called her name. I told her vet that she wasn’t hearing well and was given an ear wash to use. Until this very moment I thought that her ear infection had been so bad that it had affected her hearing, but now when I think back,she was hearing better the day we went to the vet than a few days after treatment. I woke up with a terrible ear ache this morning,Saturday, and seriously thought about putting a couple of drops of Mometamax in my ear. I thought I’d get on line to learn more about the medication. That is when I found this site with the information about deafness! The infection did clear up, but I feel so bad about a med that I gave faithfully to help Roxey may have actually made things worse. And to think I almost used it in my ear! I am going to make our vet aware of what I have learned from this site. I have a feeling many more dogs are being affected than the company who makes the med admits.

17 Stacy Monjaras { 06.19.10 at 7:29 pm }

Hi all,
I have a Mini Bull Terrier named Breeah whom I started on Otomax BID for 7-10 days as directed… on the 4th day of treatment I noticed her not responding to me as she normally did… She would not even know I was home, while all the other dogs were barking, she would be curled up sleeping…
Please let me add that I am a Vet Tech and have been for 11 years and I have never seen a dog go deaf from this medication… This was the first time I ever used otomax on Breeah and I feel so awful, she is my baby… I pray that her hearing returns quickly!

18 barb { 06.21.10 at 8:13 am }

Follow up: My dog is now 2 months after using mometemax and has not regained hearing – he is deaf in both ears. He ears only extremely loud noises, and even then doesnt know where they are coming from. I spoke with a veterinary neurologist and another complication from this medication is VESTIBULAR DISEASE ! Holy Cow, Had I known any of this, I would have NEVER use it in my dog. The company did nothing, neither did the vets office that prescribed it, they were both quite indignant to deal with ! There has to be something that can be done!

19 Carly { 06.22.10 at 2:53 pm }

Wow. I came across this because my sheltie has what appears to be an ear infection and I had given him Mometamax many times previously for infections. I have some left from last year when he had the last one so I thought I would reconfirm the dose to administer. My sheltie has been almost deaf to totally deaf for about a year. That started happening about a year ago. Tazz is 13 now so last year when his hearing went downhill I just thought it was old age. I think it must have been this medication because the hearing loss happened pretty suddenly around the time of the ear infection. I’m beside myself because I’m sure after this long his hearing won’t come back. How awful. I hate that I ever gave him this medicine!

20 barb { 06.27.10 at 9:24 pm }

Hi Carly, I feel the same way, Im so upset I gave this to my dog who so patiently stood there and let me put it in his ears for so long. Im even more upset though at the vet for not informing me of this risk ! The vets office said, he probably lost his hearing from the ear infections, so I took my dog to another vet who said that the type of infections he had, wouldnt have caused this hearing loss, that it was the medication.

21 Joanne { 07.19.10 at 11:30 am }

Hi Karen and others who have posted on or been reading this entry. All of these reports make me cringe and break my heart because I know firsthand how you are feeling. At the very least, I hope that word is spreading in the veterinary community that Mometamax must be prescribed and used with tremendous caution.

(My own vet has been insistent that Fred’s problem with hearing loss occurred because one of the vets in their practice prescribed his Mometamax along with DMSO, which, of course, caused membrane permeability and therefore allowed the Mometamax to reach his eardrum. Still an outrage, yes – and I should have known better because I am familiar with DMSO.)

I wanted to apologize for seeming to abandon this thread on Mometamax. It’s been hard for me to read and comment, because Fred has crossed the bridge (undetected cancer – a much worse and longer story), and I would give anything in the world to have back those days when I was just worried about his ears.

I wish all of you the best of luck and success in your efforts to heal your dogs and restrict the use of Mometamax!

22 barb { 07.20.10 at 10:14 am }

Joanne, I am so sorry to read your last post, about Fred’s passing. My heart goes out to you.

23 Jim { 08.01.10 at 9:48 pm }

Well it’s Sunday night and now I know why our golden retriever can’t hear. Why is the cure worse than the ear infection problem in this day of technology and medicine? More important as a lay person, why didn’t my vet caution me about this issue at time of prescription? I intend on finding out tomorrow when I ask him why my dog can’t hear. Then I am going to write editorials to the local newspapers and contact local TV stations to get the word out before other dogs become a victim. Why hasn’t this drug been removed from the market? One person probably can’t stop this but we could have an impact in numbers. Would a class action lawsuit get their attention? But I see on the box the following: “NADA#141-177, Approved by FDA” How many dogs must loose their hearing before the FDA recalls this from the market? My heart is broken and I gave Ginger treats for being such a good girl for allowing me to administer deafness during that two week period of time. What a sad day. What a tragedy!

24 valerie { 08.02.10 at 12:13 pm }

I’m so sorry about Ginger. It is a tragedy. Hopefully some or all of her hearing will be restored, as it has for some of the other dogs.

25 Steph { 08.02.10 at 2:20 pm }

Valerie, thanks for the CUTEST video of the beach dogs!!! And my favorite song playing in the background. Made my day!

26 Donna { 08.05.10 at 11:45 am }

I can’t believe what I am reading. Thankfully, my Max, has not had any of these problems but I can assure you that the medication is going in the garbage. I can say that I have found a dog food that is all natural and since then, he has not had any ear problems that a little benadryl doesn’t help. I don’t know what I would do if something happened to him.

27 pat { 08.05.10 at 1:02 pm }

Joanne and Fred’s experience has prevented at least one other dog from being prescribed Mometamaxx as our new (senior) golden, Spunky, was given this drug for his ears and his foster mom said “no way”. Unfortunately, Spunky came to us with hearing loss/deafness. Can’ t help but wonder if his ear infections in the past had been treated with this.

Jim how long has it been since your girl’s ear infection?

28 Jim { 08.06.10 at 2:42 pm }

Ginger is entwering her 4th month after treatment. Here is an update. My vet says I’m his first complaint. He knows I want action so he contacted the FDA. They are asking him to complete an Adverse Reporting form. I gave the vet the actual lot # for this report. He also talked to the company. The company is under new ownership and they told my vet the frequency is only 4 per 100000 treatments! The shear number of blogs on this subject on the web dispute that data! They say 80%-90% of the dogs get their hearing restored. They want me to wait for the 6 month interval and if still not restored, they say they will arrange for a video examination of the ear drums and determine which frequencies she can’t hear. My vet says he won’t continue to prescribe if this medicine is the culpret. Be sure to have your vet also contact the FDA and maybe the impact of complaints will prompt an investigation and possible re-call from the market. Good luck to each of you! I’ll report back when I know more.

29 pat { 08.08.10 at 1:39 pm }

Let’s hope Ginger’s hearing returns.

30 Diana { 08.23.10 at 3:25 pm }

I sit here suffering such heartache knowing that I administered these drops to my soon-to-be 13-year-old Boston Terrier’s ears. He is now deaf and unbalanced. What makes my story even more sad is that my dog is also BLIND and depended SO much on his hearing to get him around. I am totally devastated. I can only pray for a miracle here to restore his hearing along with every one else who posted their stories. This is an absolute atrocity!

31 Diana { 08.23.10 at 7:52 pm }

After posting, I realized there is a second part to my story. My dog is not only deaf now but must have vestibular disease as well. Even though he is blind, prior to this he has managed fantastically around the house rarely bumping into anything. However, now since this, he is extremely disoriented and will end up standing in a corner somewhere not knowing how to get out. That is awfully hard to watch. He does more whining as well. I put a call into the vet today and the secretary called back saying doctor is “aware” that these medications can cause deafness. This was never mentioned to me. I suppose I should kick myself for not doing my homework. Doctor “hopes” he gets his hearing back. Well, gee I felt so much better after that… wrong. At least I didn’t give him the 14-day dose that was prescribed and stopped after 8 days. What’s done is done. We will try to make the best of our lives now. It hurts like heck though :(

32 Joanne { 08.23.10 at 11:30 pm }

Diana, I’m so sorry to read about your heartbreaking ordeal. I can vividly imagine what this must be like for you.

Fred, my dog whose experience with Mometamax started this thread, also had vestibular disease. As far as I know, it was unrelated to the Mometamax, and his episode preceded the Mometamax reaction by more than a year. Since you found this blog, you have probably read up on vestibular disease, too, and know that it is usually temporary. Fred recovered from his bout within a week. I hope your dog has at least that much luck.

I don’t know what more we can do about the continued prescription of this very risky drug. It seems unstoppable. I just wish we could identify a vet who might be able to provide advice to help the dogs afflicted by Mometamax, because all of these awful stories are so painful.

Meanwhile, keep pressure on vets to quite prescribing Mometamax and to reports these problems with the drug. And spread the word to dog owners.

33 Diana { 08.26.10 at 10:08 am }

Joanne, Thank you so much for your kind words. I want to express my heartfelt condolences at the loss of your Fred. We are taking it day by day here. There are good moments every now and then, but so far, mostly bad. He has only been off the Mometamax for 5 days. He can hear a little but normal sounds like the door bell, which would send him into an absolute state of craziness, pretty much go unnoticed. I think what concerns me the most is the disorientation. Due to his blindness, it is a vital part of his everyday life for him to be able to get around and not look like dog who has some kind of mental disorder. I know he is very unhappy and that just kills me. My heart goes out to each and every one of you who posted. At least we are all in this together. Again, thank you Joanne, for starting this topic and may Fred live with you forever. xxxooo

34 Joanne { 08.26.10 at 5:41 pm }

Thank you, Diana. Animals do tend to cope much better than we do, because they don’t think things to death and fret. They just accept and cope. Sometimes it’s comforting to realize that. Your dog’s vestibular disease symptoms should lessen over time. I’m hoping they do and that his hearing continues to improve. He’s lucky to have you there to help him make the best of things.

35 LG { 10.02.10 at 7:59 pm }

My 6 year old boxer had been scratching at his ears off and on for a couple of weeks when I took him to the vet. My vet told me his ears were pretty “goopy” and took a culture. The culture came back positive for bacteria and yeast infection. She also did a quick test by snapping her fingers beside his ears to check his response. When she snapped her fingers by the ear that wasn’t bothering him, he turned his head and flicked his ear in response to the sound him. However with the other ear, the one that he’d been scratching at, there was no response. That scared me as I was thinking that he had already lost the hearing in one ear. The vet gave me a prescription for Mometamax and instructed me to apply the drops in both ears (both ears tested positive) once every 24 hours and to flush his ears with an ear cleansing solution twice a week. After five doses I knew something had happened to his hearing. I have a second dog that has been deaf since birth so I recognized the signs of deaf dog. I stopped using the medication, not because I expected it was the culprit of his deafness, but because I thought he might need something stronger and wanted to be able to start him on it as soon as I could get back into the vets office. On day six, I was back in the vet’s office and they tested his ears again and the bacterial infection was gone with traces of the yeast infection still remaining. However his ears were still inflamed and red. My vet examined the rest of his body and noticed that the skin between the pads of his feet were bright red as well. She believes he is having a strong reaction to seasonal allergies which makes perfect sense as he has always been sensitive to season changes. So she told me to stop using the Mometamax and started him on antibiotics and an antihistamine with steroids. Still his hearing had not returned so I started searching for some answers on the internet and I found this post. I too am horrified that I caused my boxer’s deafness with this medication. I pray that his hearing returns as he hears for two. I’m just sick about this and agree that something must be done to inform vets and owners alike. It’s been four days since I stopped using this medication and he doesn’t seem to hear any better. I’ll update his progress in a couple of weeks.

36 pat { 10.03.10 at 5:51 pm }

Let’s hope that since you didn’t use the Memetamax for very long your pup’s hearing will return.

37 Amaya { 10.03.10 at 9:37 pm }

My 131/2 years old Chihuahua was in perfect health except for a bilateral ear infection. He was prescribed Mometamax and 5 days later we noticed he was not coming downstairs to meet us when we got home, did not look like himself and was falling into a very deep sleep that nothing will wake him up but if we shook him. We then sadly realized that he was completely deaf. I am devastated. My vet said that after so many years practicing this is only his second case but I am reading about so many other cases on line. This medication may be very effective for ear infections but going deaf from one day to another after an ear infection, outweighs any benefits. Please, only use this medication if you can handle the pain and sadness of seeing your companion deaf. There are no warning signs, it happens abruptly, from one day to another. The vet says his hearing may or may not return. I am so sad, I hope he recovers.

38 pat { 10.04.10 at 11:22 am }


I’m so sorry for your little one. Let us know if his hearing improves as it provides hope for others.

39 Joanne { 10.04.10 at 3:03 pm }

LG and Amanda, my heart goes out to both of you, especially as I know firsthand how you are feeling. If it’s any consolation, I suspect the dogs handle deafness lots easier than their distressed owners. But I hope your dogs recover some hearing in time.

I wish I knew how to prevent the use of this drug. Even my own vet will not agree that Mometamax was the culprit in Fred’s temporary deafness. Perhaps the internet is our only way to get the word out about the dangers of this drug. Write about it everywhere you can.

40 David { 10.05.10 at 7:53 pm }

My dog, Dakota – choc lab, has also gone deaf while being medicated with Mometamax. I started him on the mediication last week and found after 7 days that he ceased to respond to my voice. It did seem to happen almost overnight on the 7th day. I have stopped the medication and am going out now to get ear wash in hopes that I can remove what remains of the drug. It doesn’t help that he is blind in one eye. Poor guy – I feel really guilty giving him this medication. My other lab Shadow had a severe reaction to the drug in the past. The vet has a note in the file not to give the drug to Shadow. When I raised the issue regarding Shadow’s prior problems with the drug and I was concerned about giving it to Dakota, he assured me it would be OK. I guess not – different reaction, but much worse. Now he’s partially blind and deaf. Damn this drug.

41 Joanne { 10.06.10 at 1:31 am }

David, I’m so sorry to hear about Dakota. As with all the other dogs who have been deafened by this obviously dangerous drug, I hope he is lucky enough to recover some hearing.

We all need to send a link to this thread to our vets and also circulate the link on any other dog and veterinary forums that folks might frequent. I wonder if there is a way to send the link to the drug manufacturer. Anybody know?

42 Donna { 10.06.10 at 10:15 am }

My yellow lab Sherman is 12. I suspected he might be getting a yeast infection in his ears. I could smell that familiar yeast smell and saw a TINY bit of brown goop starting to form. I decided to be proactive ..called the vet and asked if I should go ahead and start him on drops. I have always used something called Demathasone ? (can’t remember exact name) … I was surprised to get a new drop but thought maybe it was new and better. I ONLY USED IT ONE TIME … and then I stopped because I could tell Sherman was not acting right. He usually goes bananas at the doorbell (even if he hears one on TV). He can lie right next to the door and not respond to the bell now. He does not come to his name or hear clapping if you are behind him. Just like all the other cases I’ve read here .. he seems to go into a deep sleep as if he’s dead. He always had excellent hearing before this … he could hear thunderstorms LONG before we could. My local vet has recommended using Epi-Otic saline. We started that yesterday. Sherman one time today seemed to hear me whistle loudly and sharply. I pray his hearing returns. He has been through a battle with cancer this past year and was doing so well. Now this! .. I feel that same guilt all of you feel about being the one to give him this stupid drug! I have called University of Tennessee Vet hospital who treated him for cancer .. they are top notch! .. I will let you know if they have any suggestions that my local vet does not. Best of luck to all of you!

43 Donna { 10.06.10 at 10:24 am }

correction to my previous post … the drops used before were DMSO … and they worked with no problems

44 Joanne { 10.06.10 at 10:58 am }

Donna, my heart goes out to you, too. Please do let us know anything that UT might suggest about treating Mometamax-induced deafness and/or stopping the prescription of this drug.

We also were able to bring back Fred’s hearing through the use of Epi-Otic, so I wish you similar success. I think I have mentioned this previously, but our vet did blame the combination of DMSO and Mometamax (prescribed by a colleague in his practice) for Fred’s harm. DMSO causes membrane permeability and therefore allows the Mometamax to pass through the eardrum – a disastrous occurrence.

Thanks for following up with UT and best of luck with Sherman.

45 robin st jean { 11.17.10 at 5:40 pm }

My 13 year old westie had an ear infection in october…the vet prescribed otomax….it seemed to improve…a month later his other ear so we re administered in both ears….within a week total deafness…..my dog is my life…i could throw up im so sick….the vet is trying to clean his ears 3 times a week and using other meds to get the swellings and yeast infection at bay. yesterday when walking puffy i noticed he could hear abit from the one ear…..not sure what else to do…does acupuncture really work…i feel so horrible. I love him so much…its saddens me that he cant hear me or anything much.,….is he sad and scared?

46 Joanne { 11.20.10 at 12:54 am }

Oh, poor you, Robin! I really understand your distress, but I think it’s encouraging that he is showing some signs of improved hearing. Puffy probably isn’t sad or scared. It seems likelier that he thinks the world has quieted, and maybe he is sometimes grateful for that. Let us know if your vet’s therapy works.

So sorry you are having to confront this.

47 todd { 11.24.10 at 4:29 pm }

We’re going through this now with our twelve year old black lab. On day eight of the ten day treatment she was stone deaf. Took her back to the vet who looked in her ears and said they were still slightly infected- then asked if I had any of the mometamax left! WTF??? I’ve since found a homeopathic vet who gave me zymox to use once a week, and in between I use epi-otic as a flush halfway through the week. So far her hearing is back to around fifty percent and the infection appears to be clearing well. It’s been a rough three weeks, all we can do is keep spreading the word.

48 Joanne { 11.25.10 at 12:55 am }

Please do spread the word, Todd. And I hope your dog continues to regain her hearing. It sounds as if she might.

49 Diana { 01.05.11 at 9:58 pm }

There IS hope… After 4 months, I have to report that my 13-year-old Boston Terrier has gotten his hearing back. It was a tortuous wait but I continued to pray and hope for a miracle. This medication must be stopped especially among elder dogs. For those who didn’t read my earlier posts, my Boston is also totally blind as well, so he depended on his hearing so much more. It was so heartbreaking especially knowing that I caused his deafness. His disorientation has subsided and gotten better. However, whenever I see him getting a little confused in his walking and shake his head or scratch his ears, I give him a quick squirt of the fungal flush, which takes care of the problem. I will still keep all of you in my thoughts and prayers and hope for your miracle too. Just have patience and take it one day at a time. Love and blessings to all of you ♥♥♥ Now we have another problem to deal with… he is in stage 4 CHF. Like I said, one day at a time….

50 Joanne { 01.07.11 at 12:27 am }

Thanks so much for posting this good news, Diana. Best of luck with the road ahead. Your old guy is so lucky to have you!

51 Lorrie { 04.22.11 at 1:00 am }

My 11 year old Collie Fidget was examined for a suspected ear infection. The vet I brought her too (and had been going to for years) said yes it was a mild infection and treated her in the office with Mometamax. She put the drops in both ears even though the one was bothering her. That same afternoon I noticed that she was acting strangely. She wouldn’t come when I called her and was acting really strange. I had worked in a vet’s office and just thought it was just from the stress of the office visit. The next day she acted completely weird like she was detached from me and everything around her. That’s when I realized that she was totally deaf. The vet was of no help at all, she said that I was the first one to ever complain about this in eight years. I had the Mometamax but never used it, she only had that one dose in the office. The vet acted like I was stupid. So I did my own research online. Found out that on the Merck web site which is the company that makes the product, it says “may cause temporary or permanent hearing loss or deafness in geriatric dogs.” So my question is why didn’t my vet know this?? And why wasn’t I told of this possible terrible side effect before it was administered??
I took her to a different veterinarian and found out within 5 minutes that Fidget never even had an ear infection. The pain she had was caused by an abscessed tooth. It was so bad that it affected the whole side of her head including the ear.
So she was treated with Mometamax when she didn’t even need it to begin with.
This all started on April 2, 2011 and today is April 22. Her hearing has not come back, she can only hear very loud claps and I’m heartbroken. My dog had acute hearing right up until that day.
I called the Merck company and told them what happened. All they said was they’ll send me the $33 that I spent on the product. Wow…..does that make everything alright??! I feel so sorry for all of you and your pets who have gone through this. We all should get together and do something against this company. Too many pets are being hurt and people need to know about it.

52 Joanne { 04.23.11 at 11:42 am }

Lorrie, my heart goes out to you and Fidget. Hubby thinks injured folks should get together and threaten Merck with a class action suit, maybe get them to elevate the warning at least, or worry vets.

53 evonne { 05.11.11 at 3:15 pm }

I just got back from the vet, i took both of my dogs(male & female/ maltipoo) to get their skin cheked up since they been having weird change of discoloring on their coat, went from white to a redish brown, while i was there the vet prescribed Mometamax for my female dog, but as usual i try to research every medicine before i apply it, and i am very thankful that you post this warning…So i called my vet and ask her about what i had found on line and her respond was “Dont worry we never had any complains about the medicine, so everything should be fine” Now i dont know what to do, i dont want her infection to get any worse, but at the same time i will feel super bad if i CAUSE any harm to her, it will break my heart to see my baby suffer because i follow what my vet said, n ignore the warnings.. I always try anything that is natural, but i am cluless about ear infection, does any one know about anything? I will really apreciate any help…and THANK YOU again…

54 Joanne { 05.12.11 at 10:53 pm }

Personally, I would not run the risk. Just look at the anguish on this thread. There are other, less dangerous protocols for ear infections. Ask your vet for another option or consult a different vet. Good for you, doing the research first!

55 evonne { 05.13.11 at 9:20 pm }

thank you so much Joanne…have you or any reader ever tried (Zymox Otic Enzymatic Solution with Hydrocortisone) I been searching for any side effects but had no luck, so i wonder how good is this medicine…

56 Joanne { 05.14.11 at 12:50 am }

I wish I could recall the name of the meds we used for canine ear infections in the days before Mometamax, but it was a thickish yellow solution that my husband always called “banana puree” because that’s what it looked like. And it always did the trick.

57 Sue { 06.20.11 at 6:56 am }

Our Standard Poodle, Jack, had multiple ear infections from puppyhood until he was @2 years old. Two different vets prescribed Mometamax – his ears would get worse using it – pussy, red, inflamed. They would change to a different med (steroids, etc) and it slowly cleared up only to return again. Jack is now deaf due to the Mometamax.

58 Maria Alejandra { 06.20.11 at 10:18 am }

The YELLOW stuff “Joanne 5/14/11” did not have the name of, I believe is

59 Maria Alejandra { 06.20.11 at 10:21 am }

That is what the 1/2 oz bottle of “thickish yellow solution” ear solution has printed on it.

60 Kim A. { 06.20.11 at 10:29 am }

We have used PANSEB in the past with no problems.

A fill in vet tried to give us Mometamax one time, and I said no-way. She got defensive and tried to defend the product. But we stood our ground.

61 Jill { 07.06.11 at 8:31 pm }

I hope some of you come and check this website periodically. I have a heeler/aussie female who has a yeast infection in one ear. The vet prescribed Mometamax 1 time a day and every 3 days clean her ear with Epi Otic Advanced. Idon’t read in these threads that anyone else cleaned their dogs ears with the cleanser during the treatment. I wonder if this is a balance instead of the straight mometamax buildup with no cleanser during the treatment. I bought some Zymox with hydrocortisone drops for infections and fungus but they won’t be here until tomorrow and I didn’t want my dog to suffer. Now I am wondering if I should stop and just use the Zymox. with the cleanser every 3 days. Thanks and so sorry everyone has had prob lems. I know my daughter used these drops on her rotties ears with no problems with the hearing. I guess all drugs have side effects, we just have to decide if we want to take that chance. Thanks.

62 Jill { 07.07.11 at 12:20 am }

After discussing this with my husband, I have decided to discontinue the mometamax and wait until the Zymox with hydrocortisone comes from Amazon. I will let you know if it actually works like the reviews say it does. thank you all for this blog and letting me know to be aware of this drug. I am sending this link to all my dog owner family. Jill

63 pat { 07.08.11 at 7:48 am }

Seems as though senior dogs have the most problem. I foolishly used Ottomax on a young golden in foster care, but fortunately didn’t have a problem.

64 Alicia { 08.11.11 at 2:05 am }

This thread has devastated me. My old dog, Jimi, had a seizure when we were on vacation. We took him to a local vet who said it could be canine vestibular syndrome or possibly a stroke. The vet looked in his ears and said they looked okay but he could have a deep infection, so he prescribed Mometamax “just in case.” My poor boy is now deaf and I’m heartbroken and furious. He recovered quickly from his unsteadiness, all back to normal except he’s now deaf. I’ve been crying, reading all these accounts, and I’m also outraged. This is malpractice to give a geriatric dog this toxic drug.

65 Alicia { 08.11.11 at 2:08 am }

PS: I did send a link to this thread to the treating vet.

66 Joanne { 08.11.11 at 10:39 am }

Alicia, I am in tears just from reading about your plight. Thank you for sending the link to the vet who prescribed Mometamax. Maybe we should all be sending the link to this thread to our vets. What a good idea!

My dog, Fred, whose experience with Mometamax started this thread, recovered his hearing, as have some of the others. I hope that Jimi may have similar luck. My heart goes out to you. Dogs tend to be pretty philosophical about these things, so Jimi will have a good life ahead, one way or the other.

67 Alicia { 08.12.11 at 4:49 pm }

Thank you Joanne. I made an “adverse reaction” report to Merck Animal Health Technical Services. Their phone number is 800-224-5318 for Companion Animals (Dogs, Cats, Horses). I spoke to Merck’s veterinarian, Holly Brianceau, DVM. I encourage all of you who have had a dog go deaf from Mometamax to call and report it. She was very nice and very sympathetic. She said it’s rare and that 80% of dogs recover some or all of their former hearing in about 2 months. I hope so.

68 Joanne { 08.12.11 at 10:52 pm }

THANK YOU for reporting and for posting the contact information!

69 penny { 08.23.11 at 6:19 pm }

I have a 14yo female dachshund. Took her to the vet around aug 12 because her ears were a little bit dirty inside and she was scratching them allot.
He said it was a minor yeast infection and prescribed mometamax for 2 weeks. After giving her the mometamax for about 3 days she started acting weird.
She would bark constantly while i was not home, she starting digging on the couch, bed, blankets,etc. trying to get underneath them and she was sleeping allot more.
Also she did not respond when i called her name or said “you want to go outside”. I thought she was not feeling well but i finally realized on day 7 that she could not hear!
It has been 5 days since i stopped giving mometamax to her and she has regained some of her hearing but it is only about half of what it was before. Also all the strange behavior has stopped.
She can hear me up close but she can not hear me from the other room. She had excellent hearing before the medicine. I’m glad i did not give her the mometamax for the full 2 weeks the vet prescribed or she might have been totally deaf. This is soo upsetting because she has cataracts and can’t see very well. So now she has less quality of life because her hearing is now damaged. I wish i would have done research on this medicine beforehand. Who would have thought that ear drops for ear infection would be toxic to the ears? It doesn’t make sense. I hope she regains all of her hearing she has lost in the following weeks. I will try to update. Also the Zymox Otic Pet Ear Treatment with Hydrocortisone on amazon has great reviews. I would definitely try this if her ear infection returned.

70 Joanne { 08.23.11 at 11:58 pm }

Oh, Penny. Every time I read about another dog and owner afflicted by this drug, I am heartbroken. It sounds as if your girl is on the road to recovery, though.

One thing for you and for anybody else thinking about using ear meds of any kind – make sure to have a vet inspect the ear drum before you put anything in your dog’s ears. The tiniest perforation can cause big trouble.

Best of luck to you!

71 Steve { 09.01.11 at 7:18 pm }

My 11 year old lab/Shar-pei mix had an ear infection and his vet prescribed these drops. I gave them in both ears as directed once a day and now he is almost completely deaf. I feel so guilty! You have to yell within a few feet of him for him to hear you at all. Then he looks around like he thinks he heard something. I feel so bad for hurting my best friend. PLEASE don’t use this on your dog for any reason. I’m going to have to live with making my best friend deaf for the rest of my life. I miss him looking out the window when I get home :( Please remove this from the market before any more dogs get hurt.

72 Joanne { 09.02.11 at 10:29 pm }

Steve, I am so sorry! I know exactly how you feel, but I hope you and your beloved dog will find new ways to make each other’s lives a joy. Look for them.

73 pat { 09.03.11 at 11:58 am }

I refused this drug recently for a foster dog and when I asked for a different treatment option because ottomax can cause deafness, the vet said “Your right. It definitely can.” Then why prescribe it when another, less expensive drug works just as effectively?

74 Kim { 09.04.11 at 1:40 pm }

Wow Pat, I’m shocked she came out and said that. They must really get some kind of kick back for selling these awful drugs!

75 Max { 09.09.11 at 5:36 pm }

I took my dog to the vet for a yeast infection and he put the Mometamax in his ears and advised me to do the same. So for about 3 days I put it in his ear, then I noticed that he no longer responded when I called him. Before this he had excellent hearing. He could hear me drive up the driveway and start barking, because he knew it was me. I took him back to the vet who then proceeded to tell me that Mometamax could be toxic to the dogs ear drum. I am furious about this, as my dog is now deaf. I wish I could sue the Vet or the makers of this toxic drug.I am just sick about it. If he knew it could cause deafness, why did he prescribe it. I think Kim is right about the kick back!!!!

76 Joanne { 09.09.11 at 5:55 pm }

Max, send your vet a link to this thread! Meanwhile, I hope your dog recovers at least some of his hearing. Some dogs eventually do.

77 Max { 09.09.11 at 6:35 pm }

Thanks, Joanne, I will send him the link. He needs to know what this drug can do.

78 Steph { 09.10.11 at 11:48 am }

Joanne, my vet at Breton Veterinary Hospital in Leonardtown, Lynn Fenwick, has never heard anything detrimental about Momemtemax. And I don’t know how to send the info to her or this section of the blog. Would you be so kind as to send some info on this? Their email is bretonvet@verizon.net and their fax is 301-475-2762. Thanks so much.

79 Joanne { 09.10.11 at 11:53 pm }

Hi Steph. I’m not sure how to do it either, because I think our links have cookies in them. But you can try sending her the url from here. Just copypaste whatever you have on your address line? I’ll try sending her the link I have, but you might need to follow up and see if it worked.

80 Steph { 09.11.11 at 10:26 am }

Thanks Joanne. I don’t even know what an url is but I’ll try to figure it out.

81 Joanne { 09.11.11 at 5:37 pm }

Steph, give them a call and ask if they were able to link from what I sent them.

(We can talk url at the beach next weekend.)

82 Octavio Rivera { 09.28.11 at 7:20 pm }

I was told today that my dog is 100% deaf , and there is nothing I can medically do, for the rest of his life due to this medication after 3 weeks of use. My dog is a working dog, a level one protection dog. They sell for $35,000. His training and ability to hear me and the families voices has been neutralized for life. I am currently contacting attorneys, and if anyone has had success with a lawsuit, or pursuing one, feel free to email me. I am so sorry to anyone who’s pet has been hurt by this med and by the vets that prescribe it. I feel your pain.

83 Joanne { 09.28.11 at 11:29 pm }

It would be very interesting to see what data a lawsuit might bring to light. Based merely on the outcry on this thread, I suspect this drug has done a lot more harm than what has been admitted by Merck. Buy lawsuits against corporations are always iffy propositions.

I am so very sorry about your dog. What a shame!

84 julie { 10.18.11 at 1:37 am }

n use this product on my dog and now she can;t hear either,so mad,shes been through so much &now this,is there anything I can do to help regain her hearing besides stop using this product

85 stephanie { 10.23.11 at 7:27 pm }

This stuff was prescribed for my dog Violet’s ear infection. Now she’s deaf. I’ve been looking like crazy for some hope that her hearing will return. I am so upset I can’t stand it. It doesn’t matter to me if the vet didn’t know, they should know what they are prescribing. I feel so guilty because I should have looked it up before I gave it to her. Who would think that ear drops would harm the ears????? It’s so absurd. She has kidney disease because of enalapril that a vet prescribed and now she has to be deaf on top of it? I don’t trust vets anymore.

86 Joanne { 10.23.11 at 11:50 pm }

Julie and Stephanie, everytime I read one of these posts about deafened dogs and heartbroken owners, it breaks my heart, too. There is some hope that your dogs will recover some of their hearing. I wish you the best of luck.

87 Patti K { 10.27.11 at 11:28 pm }

My almost 15 yr old Westie was prescribed Mometamax for an ear infection about a year ago and became totally deaf. After about 4 weeks she started to gain her hearing back. This September, I brought her in to our vet on a Saturday. Our normal vet was not there and one of the other vets confirmed that she had an ear infection. She was prescribing drops and it didn’t dawn on me to say anything since I thought she would have read the file. She apparently did not read it and administered the SAME MEDICATION! (I had asked her to do the first dose while we were there). I realized the horrible error the next day when I was going to give her the first dose of the day. She is now deaf again and it’s been 6 weeks!! Our regular vet has said that the longer the “window of opportunity” gets, the less likely that her hearing will return! I am sooo upset knowing that she may never hear me again. Since she is almost 15 (in another couple of weeks), who knows how long she will live. She may never hear me comfort her if her days are short. I feel so badly that I just didn’t remember to say anything. she had some other issues lately and it just went passed my mind. I would never suggest this medication for senior dogs. It’s not worth the risk. There are other options.

88 Joanne { 10.30.11 at 1:21 am }

Don’t blame yourself, Patti. Many dogs who live to the ripe old age of 15 suffer hearing loss, anyhow. And dogs accommodate deafness along with other infirmities much better than we humans do. She will read your efforts to comfort her just fine. Enjoy each other. And be sure to express your displeasure to the vet.

89 stephanie { 10.30.11 at 3:26 pm }

Has anyone heard of a d dog having a seizure after mometamax? My dog lost her hearing after 14 days on it, so far it hasn’t returned. Then a week later she had a seizure. She’s never had one before. The vets say no, but I’m really skeptical of coincidences. Possibly she was dizzy because of her ears and she fell down the stairs then had the seizure. I’ve read that gentamicin can cause nerve damage including seizures.

90 Joanne { 10.30.11 at 7:44 pm }

@ Stephanie. I think I might wonder about vestibular disease?

91 Donna { 11.20.11 at 10:01 am }

I sit here reading these comments on Mometamax and I’m heartbroken. My 10 year old boxer girl was diagnosed with a slight yeast infection in her ears. The vet gave some drops to administer for 10 days. This is the first time I did not read the product info sheet. The vet NEVER mentioned there was a possibility for hearing loss.
Day 8 I noticed that Maddison was not responding when we called. I thought she was just tired. Day 10 – I knew she could not hear. I began ‘testing’ her with different sounds from different locations – it confirmed my fears. I went to the computer and entered Mometamax and hearing loss and this site and a pet med mail order site were the first two hits. I read the various accounts of deafness and hearing loss and it made me sick.
It was late and I didn’t have anything to flush the ears so I took her to an emergency clinic. The vet immediately explained the risks of this drug. She flushed the ears thoroughly. She said we would know if Maddison would regain any of her hearing in about 5 days.
I am heart broken. I feel responsible because I did not research the drug as I usually do. Maddison just looks at me. She was always keenly aware of every sound, every motion. She would alert me to anything she felt needed my attention. Now the few sounds she can hear, it’s like she can’t figure out where they are coming from.
Had I known the risks, I would NEVER have given this drug to my dog. Never! It is so devastating.
I do thank you all for sharing your experiences. Otherwise, I would never have known the truth.

92 pat { 11.20.11 at 1:58 pm }

Donna, let’s hope your Maddison’s hearing will return. Spread the word to all of your friends as this drug is widely prescribed.

93 Donna { 11.22.11 at 11:07 am }

I spoke with my vet yesterday. It was very matter of fact. She said it was just a nasty complication unfortunately. She didn’t put Maddison at any more risk than any other dog they prescribe this medicine for (even though she is almost 11?). She also thought I needed to be careful with what I read as people don’t post good stories.

I have good judgment and I know how to research. I also would have been more observant and watched for any signs of hearing loss had I known that was a potential side effect. We didn’t immediately understand it was hearing loss and thought she just felt bad.

I failed my dog as I thought this was a simple treatment with little/no risk. My vet failed me by not telling me what the risk was with a drug they prescribe frequently and are aware it can cause problems. Deafness or hearing loss is not an insignificant thing.

It is unfortunate that pet owners can report a problem regarding pet food to the FDA, but we are not allowed to report a problem with a medicine. Only vets can send info to the FDA CVM regarding problems with meds. And if your vet is confident in the medicine, they likely will not report.

I encourage everyone to speak up regarding how this drug affected your dog. It is only through concerned, diligent pet parents that we can help each other.

94 Joanne { 11.24.11 at 4:51 pm }

Thanks so much for taking up this cause and for passing along your experience and advice, Donna. I’m not sure why veterinary devotion to this drug is so intransigent. In my opinion, the risks are too high.

Meanwhile, I hope that Maddison will regain some of her hearing. There’s hope for it. My dog Fred, the first dog on this thread, recovered his almost fully.

95 Liz { 12.07.11 at 5:02 pm }

Hi Joanne and All – Just thought I would throw my name on to the pile of people whose dogs lost their hearing because of any ear infection med containing gentamicin [in the case of my 10-yr-old Scottish Terrier, Agnes, it was an ointment called Tri-Otic]. Yours is the best thread on the topic and I hope that many more people are helped/comforted here!
My story is the same – My girl had an ear infection about 6 weeks ago. At the time [and I remember it vividly] she was jumping up at the sound of me moving my car keys from two rooms away. After about 7 days on Tri-Otic, she began running around looking for me when i was standing right behind her and not responding to my pleas to do this or that. I chalked it up to Scottie stubborness and didn’t give it a thought. By 3 days after her 10-day treatment, I realized she was deaf as a post. It was a Sunday… so i looked online and sure enough I found this and other warnings about gentamicin. I sobbed for a day and then took her to her vet, a neat guy with 30 years experience. He said it was possible, but that, at 10 years old, she was probably just deaf from age. He said that he had never had a case of it in his 30 years of practice. I told her how sharp her hearing had been and that I truly believed her deafness to be caused by the ointment. He said he hoped I was right, because it is usually only temporary. I choose not to be angry about any of this, including his defensive stance, because the damage is done and all prescriptions for both humans and animals have risk of serious side effects. But my understanding nature does not mean that I think this medication, any form of it, should be on the market. From what I have read in the interim, apple cider vinegar does a fine job of killing the yeast component of a three-pronged infection.
Now to my BIG WISH: I wish that the people who post about their dogs being deafened by gentamicin-based ear meds would come back and post here if their little ones get hearing back. I read loads of posts all over the web about the heartbreak, but it seems few come back to report when and if it ever came back! Agnes got her hearing back after about 2 weeks for about 4 days, then went deaf again :( it has now been 3.5 weeks total since she went off the stuff… I dare to dream she may hear again. Like all of you, my heart is broken in a million pieces that we don’t have our daily chats anymore. thanks for reading! i will be back with updates.

96 Liz { 01.10.12 at 7:40 am }

UPDATE: as of New Year’s Eve (when the phone rang and she looked up at it) my Agnes has her hearing back. That means it took about 7 weeks for the gentimicin to lose its grip. She seems to hear just about everything, though when things are quiet here for a long period of time, she forgets and thinks she is still deaf and sort of cock her head trying to hear until I say something. it will probably take a few more weeks before she sheds the deaf behaviors completely. i am elated! for those who read here in the future, i would say if this happens to your dog, you will get used to the deaf relationship in a month or so… but never give up hope the hearing will return. and if, through old age, your dog goes deaf again, you will already know how to be deaf together :)

97 pat { 01.10.12 at 10:01 am }

Yeah Liz and Agnes!!!!

98 Joanne { 01.10.12 at 5:27 pm }

Thanks so much for this very encouraging follow-up report, Liz! As you know, Fred also recovered his hearing, so I think there is hope for others, too. I love your descriptions of Agnes. Thanks for the lift!

99 Patty { 03.22.12 at 9:24 pm }

My bichon has battled ear infections for 10 years. We have tried numerous medicines and finally Zymox became our miracle. The payoff is now she is totally deaf. She has been very ill since November with other problems and she is living day to day. I put two and two together today and realized her hearing was fine until some time after starting the Zymox. She does not hear us come in and if you stand over her & yell it is to no avail. She goes into a deep sleep and is startled if we wake her. I checked all of the websites and it says “No known side effects.” I am warning everyone that there is, please do not use this product either.

100 Joanne { 03.26.12 at 10:38 pm }

Thank you, Patty. Hang in there, and I wish you and your dear dog all the best.

101 Sheila { 04.18.12 at 12:38 pm }

It is so sad to read about your babies hearing loss…so happy to read of some triumphs of restored hearing…even a little is a blessing. I am experiencing this at the moment. My 8 yr. old yorkie had allergy issues I took her to the vet for and discovered she had a yeast infection in her ears and was prescribed mometamax for 7 consecutive days twice a day, four drops total. I did not notice the hearing loss right away, my husband had left on a hunting trip, so thought she was just missing him…as she always acts differently when he is gone. She took her last dose on Friday morning, and I realized Monday afternoon that she could not hear me at all. Imagine my disbelief!!! I too looked up side effects online and was shocked to see that there indeed could be–as they put it–temporary hearing loss. I called the vet the next day on Tuesday and asked for them to call me back on this and then later in the day I took her to be checked out. They told me her ear drums looked fine…and they flushed out her ears. This was yesterday. At this point, my baby still cannot hear. I am so sad for her and me. She looks so confused. I am hoping that we do get her hearing back…at least enough to function on a more normal level as we are used to. Reading some of your posts I am encouraged and discouraged. I am happy for those of you whose babies have regained their hearing, even if partial hearing. I so hope to be one of those fortunates. In reading the first info about the loss, it did not mention how ‘temporary’ the loss could be. From your blogs, it sounds like it could possibly take a while. I do not know if I need to pursue other ways to speed it along, or just sit and wait. Anyone have a proven opinion? I am open to suggestions.

102 Joanne { 04.20.12 at 5:54 pm }

I don’t have any advice on how to expedite return of hearing. I think Fred was helped some because I interpreted the problem pretty quickly and irrigated his ears with OtiClens right away, but I’m just theorizing.

In any case, I’ll hope along with you that your yorkie recovers her hearing. I cringe every time somebody posts on this thread because the rule of thumb is that, for every person who bothers to research and post, there are another 100 who don’t. Imagine how many unlucky dogs and owners have been afflicted by this dangerous drug!

103 Lisa { 04.21.12 at 3:20 pm }

Yesterday I was suckered into fostering a German Shepherd and brought him home….with a bottle of Mometamax. He’s a huge dog, somewhat blind, and completely deaf, probably thanks to this medicine. It’s tragic, because he’s 7 or8 years old and apparently very well trained but we have no way to communicate with him….. So far he’s very sweet and gentle but gradually he’ll become dominant and because he’s so huge unless we can get through to him there’s no way we can keep him.

104 Nadine { 04.27.12 at 8:41 pm }

My vet had us to give Otibiotic ointment to our dog (Snow) for an ear
infection. We did not realize until a few days later that he could not hear anything. I talked with the vet and he blamed it on Snow’s age as he is 11 years old. I told him that I knew that it was this medicine as I did some research on it. The vet does not seem to care and said
that the medicine in the shot form is the one to be concern about but not the drops. I ask him about flushing his ears but he said it was not necessary. I am really upset. This dog is my child and it really bothers me that the vet never told us about the danger of this medicine. I am going to change vets but in the mean time I do not know what to do.

105 pat { 04.28.12 at 8:45 am }

I would stop using the medication and clean her ears out really good and hope that his hearing returns.

106 Nadine { 04.28.12 at 6:43 pm }

I will do that. Thank you

107 Liz { 05.16.12 at 5:30 pm }

sheila, lisa and nadine – so sorry to read your dogs have been deafened by gentamicin-based ear ointments too! please have faith though – my scottie’s hearing was fully restored in about 6 or 7 weeks, overnight. once during the process, she regained hearing for a few days then lost it again… so don’t give up hope!
one of the things that makes me most upset is the typical response we all seemed to get from our vets – that it was the fault of aging in our “dear old dog” – when clearly the vet had just given out pets something to put in their ears! grrrrrr. its all about law suits and all that. ugh. i have a feeling your dogs will all get their hearing back like mine did :) let us know.

108 Josh { 05.23.12 at 2:37 am }

I have a 15 month old albino husky named Ladon. He began showing signs of ear issues so I took him to an animal hospital. He ended up having a yeast infection in his left ear. The vet prescribed otomax. 2 applications a day for 2 weeks, start cleaning after 5 days and every 3 days after that until the 2 weeks was up. Well day 3 my buddy was in his kennel about to go to bed, I stared at him yawning because it seemed to last forever. Then his head started shaking and he fell to his side, his whole body began shaking and his legs started frantically kicking and he started suffocating on his saliva. You guessed it, my baby boy was seizing. I ran to the cage pull his mouth open to make sure he didn’t swallow his tongue. He is only 15 months old. So whilst staying awake with him for the next few hours I researched all I could on otomax. Vomiting, seizures, deafness…I saw these 3 words repeatedly. So right now I have the drive to sue otomax and shut down that vets clinic. I know it may seem harsh to remove that mans livelihood and shut down his business but he is going to have to be the example for all of my local vets to pay careful attention to the meds you prescribe because you may end up taking a member of somebody’s family. And as any police officer will tell “ignorance is no excuse”. This is what happens a lot today, people start caring about profit more than the quality of work they provide (I.e. apple, Nike, Microsoft, etc..) but I now have to lawsuits to prepare for and the damage will be based off of the insurance that police have for their dogs…there isn’t much more to compare it with. Oh well, wish me luck! I’m taking my pup to a natural vet for all of this, the method may cost more but at least it won’t leave him with that same non responsive blank stare I watched for 2 minutes after his seizure…

109 pat { 05.23.12 at 7:12 am }

I hope your pup is doing better now.

110 Heather { 06.04.12 at 9:43 am }

Well, I found your page trying to research Otomax (like everyone else!). Have a Boston Terrier, 11 years old, was diagnosed on 5/24 with yeast infection in his ears. Vet prescribed Otomax 2x daily for 14 days. Noticed that he couldn’t hear well about 5 days into treatment….luckily I hadnt been the best doggy-mama in this case (busy with my 2 toddlers) and had been missing doses so I hope that helps in our case?? As of yesterday he did not hear the doorbell ring! Like an earlier poster, my BT is also near fully blind due to cataracts. I am heartbroken that he can’t hear!! I am getting ready to call my Vet right now and am praying this can be treated and hearing restored!! This drug is beyond terrible, vets do not give proper information! I am also going to call Merck about this matter.

111 Heather { 06.05.12 at 10:57 am }

Well, had blood work done on our BT (yes, deafness due to Otomax)…. Bloodwork showing extremely elevated liver enzymes and gall bladder as well. Now have to give him a medication for that. Our poor guy! I did call Merck to report all of this and request their support in paying these medical costs! If any of you have dogs that are experiencing deafness, ask your vet about having bloodwork done just to be safe… This drug is horrible and fast moving on their systems!

112 Nadine { 06.06.12 at 6:11 pm }

Pat and Liz, thank you so much for your concern. This website really helped me . Snow’s hearing just returned about five days ago. He started hearing us before he started hearing the door bell. On Sunday, we tested him again with the door bell. He heard it. Although, he can hear, he is still a little slow. We changed vets because the former vet just did not care. Heather, we will take your advice and get the blood work done. Your dog’s hearing should return. I am praying for him just like I prayed for Snow. I know what you are going through as I had a really bad time when I found that Snow could not hear. The drug is bad and I cannot understand why they are continuing to prescribe this medicine. I guess it is all about the money and that is sad.

113 Jamie { 07.10.12 at 12:10 am }

My 11 year old shepherd mix has also gone partially deaf after using Mometamax. (right now I say “partially” -hoping it doesn’t get worse). He had an Aural Hemotoma (ear swelled like a balloon)on his left ear so I took him to the vet. I was told that he had a “minor ear infection” and was prescribed this poison (apply a generous squeeze 2x a day for 2 weeks!) along with Prednisone for inflamation and earcleaner. They cut a slit in his ear and gave him back to me all bloody – no bandage or anything I took him home and finished what they startedby draining/ milking his ear to get the fluid out. Then I started the Mometamax. Within a few days, I noticed that my boy wasn’t greeting me at the door or coming when I called him. I’d have to yell to get his attention. At first I thought that it was because of the heat and he was just wore out and maybe just some selective hearing but, after testing him by knocking on the door and getting no response I knew he couldn’t hear me. I then read the fine print on the paper that came in the box with the Mometamax and found the warning that the vet SHOULD have verbally warned me about prior to prescribing. I would’ve said HELL NO! if I had known that this could happen. Why would anybody want to risk their dogs hearing and quality of life when there are other safer options?! I cleaned his ears out real good and took him to a different vet this morning. Now, his left ear is so swollen inside that they couldn’t even see his ear drum. I’m hopeful that that is why he can’t hear me and that this is temporary. I also had them do some blood work and his liver #’s were very high. We don’t have any results from the past to compare them to so we’ll be doing blood work again in a month. The vet thought that maybe the Prednisone had something to do with that. She had me stop all meds prescribed by the other vet and prescribed Animax ointment (3-4 drops every 12 hrs)and the antibiotic Cephalexin (2 caps every 12 hours). I feel horrible even though I did nothing wrong other than trust my vet. My pooch still seems happy and smiles at me but I see the confusion on his precious face when he thinks he hears something and it kills me to know that this was done to him by me. I’ll update you all as time goes on and I hope that you all will do the same. Best of luck to you all and your furry friends. Also, I will be posting thos link to my facebook and I will share this with my previous vet. Hopefully she learns something from this and save the hearing of some of her patients by not prescribing this med anymore. She was clueless btw- and I wasn’t very nice about it- but I don’t feel bad. These vets should know their stuff before prescribing meds. It only takes a second to Google!

114 pat { 07.10.12 at 8:39 am }

Jaime, Let’s hope your pup’s hearing returns. I get frustrated as I have to TELL the vet each time I take a foster dog that has an ear infection to prescribe Tresaderm as they ALWAYS want to prescribe Ottomax. AND they KNOW it can cause hearing loss! One of the vets even said she has read the postings about this on this blog.

115 Jamie { 08.09.12 at 8:56 am }

So it’s been a month since I put the mometamax in my dogs ears. His hearing has improved a great deal. I am so relieved and lucky. I would say that his hearing is back to about 80%. After speaking with the vet about my concerns she insisted the mometamax is a woderful drug for the dogs that it works for and they will continue using it regardless of my experience. She told me that she prescribes it about twice a day and that this is the first case where deafness has occurred. I wonder how many deaf dogs it’s going to take for her to come to her senses and prescribe something else that doesn’t carry such risks. She also didn’t feel that it was necessary to make me aware of the side effects because they occur so rarely. That that sucks and I’m very disappointed in her. We are not going there again. Best of luck to all of you and I hope that your dog’s hearing returns has mine did.

116 Lexus { 08.10.12 at 4:28 pm }

I used mometamax on my pug Moo about 2 years ago and did not notice any hearing loss. She has constant issues with yeast, which we can manage for the most part. It is getting bad again and I was looking up alternatives to mometamax (soo expensive), when I came across this and several other sites talking about deafness. I wont be using that again for sure! I did find something out there called Zymox. I cant find anything but good chatter when I researched this as an alternative to mometamax. They have a version with and without hydrocortisone for people who are concerned about the use of steroids. Plus it it OTC! I am not a vet or anything but this looks like the next best rout for me as I have already been to a vet and know what is causing my dogs ear problems. I thought I would share here as some people seem hopeless. So sorry so many dogs have suffered. I will add a link to some info as well.


117 Joanne { 08.12.12 at 9:25 am }

Thank you for taking a moment to add some hopeful information to this troubling thread, Lexus. Those whose dogs need ear meds should check out your helpful suggestion.

118 Diana Rogers { 08.12.12 at 8:47 pm }

Don’t give up just yet.

My Yorkie is 14-1/2 years old. He started rubbing his ear on the carpet and acted like it was itching him. I took him to our vet Thursday of last week (8-2-12). The vet said Rippy had a bacterial infection in his ear and he treated it with Mometamax 30g and instructed me to put it in his ears once a day for 7 days. I put it in his ears on Friday, Saturday, and Sunday. Noticed on Saturday that Rippy was not responding when I called him. By Sunday, I noticed that Rippy was totally deaf. I was devastated! I got next to Rippy while he was sleeping and beat on a pot with a spoon, blew a whistle, screamed at the top of my lungs, and he did not hear any of it. I Googled Mometamax and saw all of the negative reviews about it. If only I would have seen this first. I called our vet and he was unaware of it causing deafness. He instructed me to bring him back in. He looked in Rippy’s ears to make sure his eardrums were still intact, and they were. He used a saline solution of some sort and flushed out Rippy’s ears. He used a lot of saline! Well, low and behold, Rippy can hear again. He can’t quite make out the direction of the sound, but at least he can hear again. I am hoping this will improve with time. Dr. Ohlandt called me this afternoon with some news for me, but I was not here when he called. I will call Dr. Ohlandt back tomorrow and post what he tells me. So, with all of this said so far… don’t give up. Maybe a good saline flushing will help your dog get his hearing back. I, for one, will never, ever use Mometamax again. Good luck to all of you.

Charleston, SC

119 Donna Kilheeney { 08.13.12 at 9:14 am }

My sheltie is 9 years old. Had an external ear infection. She was treated with Mometamax 7 drops once a day for 7 days. Around day 5 realized she was not responding, thought maybe it debris from the ear infection or the medicine coating the ear drum. By day 8 she was completely unresponsive to noises and I too thought she was dead when she was sleeping. I immediately brought her to the vet, he said her ears were clean. Thought she was sleeping better because she was feeling better. I banged a pot with a metal spoon and she did not even flinch. Well know it has been 5 more days and my once lively and playful sweetheart will not leave my side and looks so depressed. I looked this morning on line and found this blog. I contacted Merck the manufacture of this med to see what they have to say. It seems to have been a problem for over 2 years and the medication is still on the market. I am a nurse and this would not happen to humans. I suggest that everyone who has experienced such a loss contact Merck with their story. I called the vet today to try the saline washes. I hope they work. We are all so devastated as well.

Pembroke Pines, FL

120 Diana Rogers { 08.14.12 at 4:27 pm }


Ok, I heard back from Dr. Ohlandt. He called the manufacturer of Mometamax and found out that they are indeed aware of the deafness. It is the gentamicin that is causing this. Today, Rippy’s hearing is much better. Probably as good as it was before the Mometamax. He is still rubbing and scratching his ears though. I started putting vinegar drops (1 part vinegar, 2 parts water) in his ears this morning. I am also rubbing Lanacane cream (anti itch) on the inside flap of his ears. He seems much better and lots happier. And he can still HEAR! Yay!

As I said earlier… DON’T GIVE UP! There may be hope. Maybe the saline flushing will help your doggy get their hearing back.


Diana Rogers

121 CAROLYN STARNES { 08.29.12 at 3:50 pm }

I took my Australian Shepherd , Sasha , to the vet. week before last for her checkup. She had a mild yeast infection, so the vet. gave her Otomax. She is now totally deaf and my heart is broken. If I had known there was a chance something like could happen I would never have given to her. I feel so guilty and am scared about the other ways it can effect her. Have I waited to long to flush her ears ?………..she had about 5 or 6 times in ears.

May God Bless our furry babies!

Carolyn Starnes

122 Joanne { 08.31.12 at 11:32 pm }

Ah, Carolyn. My heart breaks every time another person reports this experience. I’m so sorry. When I realized that Mometamax had deafened my dog (Fred), I irrigated his ears immediately with EpiOtic. When I reached my vet the following morning, he told me to stop and put nothing further in Fred’s ears. But Fred regained his hearing, so perhaps I was right in what I did. I wish you the best of luck with Sasha.

123 Ronnie { 09.01.12 at 2:03 pm }

We’re fostering a 10 month old pitty blend, and the rescue’s vet prescribed Mometamax for a crusty skin bump on the shoulder. Reaching the end of the 7.5 g bottle, I began to notice his lack of response to his name. “Could he be not hearing as well?” I thought. While I called the vet for a refill, inasmuch as the crusty bump on his shoulder is now a reddish flesh wound that seems to bother him when I put the medication on it, I’m wondering if the vets are trying to find other uses for this stuff. And, I wonder if it could reduce hearing just by using topically!

124 Joanne { 09.02.12 at 12:54 am }

First I’ve heard of a use like this, Ronnie. I wouldn’t think topical application would cause deafness, but I think I’d be worried about what it is doing to that wound. Good luck!

125 Yas { 09.09.12 at 11:52 am }

I have a 2 year old Golden Retriever named Bella who is very prone to ear problems. Her vet likes to prescribe Mometasone every time I take her in for her ears. Luckily, she hasn’t experienced any hearing loss so far. Over the last couple of days I’ve noticed that her ears have been bothering her again and I was googling Mometasone to see if I could buy it online without going to the vet when I stumbled upon this website. I am wry concerned after reading about all the dogs who have experienced hearing loss from this medication. My Bella is a sensitive dog to begin with and has many allergies as is, and now I’m worried and don’t want to give her this medication. I’m also worried that her vet will try to tell me this is a rare side effect and will try to push the drug on me. Does anyone have any recommendations for ear infections or yeast
Infections other than this drug that are safe but effective? I read a couple of threads about a solution mixed with hydrocortisone; has anyone had luck with that one? Or anything else? I’d appreciate any feedback!

126 BarbD { 09.09.12 at 12:29 pm }

Hi Yaz,
When I took my golden, Morgan in for an ear infection whe tried to give me Montemax. Since I had read this thread I knew to say no. I asked her for a different drug and we used Tresaderm with good results. As far as I know this drug does not cause deafness but if anyone here knows of any bad effects of this drug please post. We don’t know why vets will not prescribe this drug more often other than it needs to be refrigerated. Good luck.

127 Yas { 09.09.12 at 4:45 pm }

Thank you so much for the info! I will request Tresaderm from the vet tomorrow, and if he says it’s not the right drug and still insists on the mometamax, I’ll refuse and say I want an alternative to that drug that doesn’t risk harming my dog’s ears. If anyone else has any other drug suggestions let me know so I can go in with a list of things tomorrow. The vet is quite pushy and I really need to switch to a new one anyway, but for now my poor Bella needs immediate attention.

128 Maria Crowley { 09.15.12 at 3:18 pm }

My beautiful Jake is an almost 12 year old golden. A week ago he was perfectly well. A took him to his vet for his vaccines and vet send Mometamax because Jake has a minor ear infection. Today my best friend is not hearing. I have read all your comments and I feel very sad and guilty. I have never imagined something could happen. How is possible to cure an infection but the price is deafness. Jake let me do anything because he trust on me, and I trusted on his vet. Right now I trust in Good so Jake get his hearing.

129 Joanne { 09.15.12 at 5:13 pm }

Maria, this makes me so sad for you and Jake, and so angry that this drug continues to be prescribed. We all need to send our vets the link to this thread and beg them to do something that will result in the removal of Mometamax from the market. Meanwhile, I hope that Jake will recover his hearing in time, as some of the other dogs have done. My heart goes out to you.

130 Maria Crowley { 09.20.12 at 2:49 pm }

Joanne, thank you for your comments. I am very happy because Jake is recovering his hearing. I have talked to vet and let him know that I could not believe that medication is the market, and if he knew about the side effect he did not mention it, because I would not use that medication. I hope all dogs can recover their hearing. I will inform as much as I can about this situation. I have been cleaning Jake’s ears with 1 part white vinegar, 2 parts of water as Diana Rogers suggests.

131 Joanne { 09.20.12 at 11:56 pm }

Maria, thank you for posting this wonderful (and informative) news!

132 Wendy { 09.24.12 at 2:24 pm }

Our 7 yr old pug has become almost deaf and after reading all this I have to assume it is because of Mometamax. Something told me to google the side effects today after he has been having problems for a month now and we tied it to the timing of the drops. we mentioned it to the vet and she said nothing and even suggested that since he is also seemingly losing his eyesight at the same time that maybe he has a brain tumor and suggested we take him to a eye specialist. do they get kickbacks if they provide referrals to these high priced specialty clinics??? I stood there in that exam room and bawled my eyes out and all the time she must have has some idea that this stuff is no good. AND to boot they told us to put in 7 – 8 drops and I think it was 2x per day but I saw on another website that didnt list the side effects that a 30lb or less dog should have 4 drops ONCE per day and if it is over 30lb then do 8 drops. Our Oliver is only 20lbs. so it seems we were wayyyy overdoing it. Could this be the reason for the loss of sight also since it all seems to tie to the same timeframe? I am livid at this point and if there is a Class Action Lawsuit begun I want to be included!!!
Thanks for the opportunity to vent.

133 Joanne { 09.24.12 at 11:16 pm }

Wendy, I hope you can find another vet who will listen better and provide some better options. Meanwhile, perhaps Oliver will recover some hearing and sight, if Mometamax was the problem. I sure do wish you the best of luck.

134 Susie { 09.26.12 at 3:14 pm }

I tool my 12-year-old Shih Tzu to the vet 1 1/2 weeks ago because he was scratching behind both ears. The vet put him on Momentamax, a “small amount” in his ears daily for two weeks. After only four days, he started losing his hearing. I had not read the info about this med; but when I read on the box “4 drops” once a day for “7” days, I read the information included with the prescription. It said Momentamax could cause deafness or partial deafness, particularly in geriatric animals. Why would the vet not tell me about that before prescribing Momentamax??? Do they not know what they’re prescribing?? The vet said they prescribe it all the time and had never had a case of deafness. I told her she did now. Like so many others, it hurts to know I did this to my boy. I’m very sad and angry. I rinsed his ears out with a cleaning solution from the vet, but can only use it once every 1-2 weeks. Will start using saline solution immediately, and pray it helps. Thanks to all who’ve posted.

135 Joanne { 09.26.12 at 4:59 pm }

Susie, so sorry about your (much shared) experience. I’m not sure whether saline solution will do the trick, but I irrigated Fred’s ears (he was the original dog in this long thread) with Epi-Otic, and he did regain his hearing.

Meanwhile, I find myself wishing that somebody reading this thread was an activist vet or a friend of one. We really need somebody with some wherewithal to get this drug off the market or at least limit its use to dire need and provide plenty of warning.

Does anybody know a vet who would help us?

136 Susie { 09.26.12 at 5:41 pm }

Joanne, did you buy the Epi-Otic at a pet store or online? I just checked the pet store I use, and they didn’t have it.

137 Joanne { 09.26.12 at 6:00 pm }

Susie, I bought it at a pet store (probably Petco), but it is also available online through various sellers. I just used the mild “flush” version of the product, which is also good for clean ear maintenance.

138 cindy prince { 09.28.12 at 11:45 am }


i am another pet owner/victim of mometamax deafness. my service dog went deaf from it, so now i have to be her service person. she is not old (9 yrs, mid age for an aussie terrier), and had no ear problems other than a yeast infection. she is blind as well, tho that did not impede her work as a service dog, b/c she had perfect hearing and smell. now she is disoriented all the time, and i have to pick her up a lot, which, with my condition, creates tremendous pain and problems for me.

i am currently speaking with a class action lawyer regarding this drug, and would like to know if anyone else is talking to a lawyer, or has any evidence from a vet or scientist (papers written?) that will support the claim that memetamax is causing deafness in dogs. we can get this drug removed if we work together. my girl, melani, may never get her hearing back, but we can certainly work to create a safer medical environment for the rest of the dogs who can hear.

thank you all for your stories here. if any of you would be willing to tell them to a lawyer, or have any scientific or professional proof (even a conversation like pat’s, where her doc said ‘of course it does’ regarding another drug causing deafness) please contact me. i am specifically interested in mometamax, but would like any proof of any of these drugs causing deafness, as some components are shared in all of them. my email is:


i look forward to your help. thx
cindy prince

139 Joanne { 09.29.12 at 12:03 am }

Ah, Cindy, how really awful for you. These stories just get worse and worse. My heart goes out to you.

I also wish you every success in your legal action, although I’m not sure I can be much help. The insert I received with Fred’s Mometamax included a warning about possible deafness in some dogs. Perhaps that isn’t sufficient evidence on its own, but the sheer number of reports on this thread alone (and imagine how many there must be that have not been reported here!) would seem to make a case for withdrawing the drug or curbing its use.

140 Kristen { 10.01.12 at 3:18 am }

My 10 year old blueheeler Jax has been on otomax for 7 days and was obviously not hearing today. So I did research and saw right away that it can cause deafness. I am disgusted that I was not warned about any possible side effects. I’ve discontinued use and will be headed to a different vet first thing tomorrow to have his eardrums checked and then a possible saline flush. Please let me know if anyone knows of anyway to accelerate his recovery from what I’m hoping is temporary deafness. I, as many of you, feel terrible that this happened to him but I’m not going to think of it as “i did this to him” I feel that the responsible party is the drug manufactuer as well as the Vet for neglecting to give patients necassary and proper percautions. I keep crying about this but would love to have the K9 perspective that Jax has…he is currently relaxing and getting some solid (and unfortunetely quiet) sack time. He’s always been a fireball, reponding like any cattledog would to every sound, barking and alert. Of course I’m devastated but he doesn’t seem to mind. If Helen Keller can do it, our dogs can too! In the future I will not be trusting any reccomendations of vets or drug companies without doing my research first! It’s hard but let’s try to keep in mind that our dogs can still live very happy lives after hearing loss. And PLEASE, ANYONE CONSIDERING USING OR PRESCRIBING THIS…DO NOT USE THESE TOXIC DRUGS…USE A SAFE ALTERNATIVE! THESE PRODUCTS SHOULD NOT BE ON THE MARKET AND ARE TOTALLY NOT WORTH THE RISK!

141 Molly Carter { 10.01.12 at 8:05 am }

Ok. I’m sufficiently frightened and have been for a long time watching this strain. My four+ month old Golden pup is a water fanatic. At his age, he is an incredibly strong swimmer already and will retrieve until he drops if I let him so I feel I need to be prepared. Vet said to just use alcohol on cotton balls which is working nicely now without irritation after each swim and here and there as necessary for hygiene. Fortunately he likes the flipped up ear look and walks around like that quite a bit and sleeps like that too so that helps aerate them, but what ARE safe alternatives to keep either in our kit or in the back of our mind for a safe Rx if they need it?!

142 pat { 10.01.12 at 8:34 am }

I always ask for Tresiderm ear drops and have never had a problem. There is a second tier drop we had to use for Ruby when the Tresiderm didn’t work call Posedex or something like that. Some folks swear by cider vinegar. I use just regular ear wipes at least weekly to keep ears clean.

143 Molly Carter { 10.01.12 at 8:38 am }

Thank you Pat. I will put that in my notes. My kayaking sis in law uses a vinegar-water solution in her ears. I just know the way this pup likes water that the day will come. He’s fearless in the water. A furry fish!

144 Joanne { 10.01.12 at 5:43 pm }

Prevention is my strategy, too. I clean ears with ear wipes weekly. If I smell or see anything amiss (like yeast buildup down in the ear), I irrigate with a squirt of Epi-Otic.

Frida, whose ears are just a bit longer and hairier than Zelda’s, is prone to nasty build-up, while Zelda’s ears are nearly always immaculate. (If you can bear to do it, it also helps to keep hair in and around the ears trimmed. I even had a vet joke that clothes-pinning or supergluing the ears together on top of the head would help.)

145 Molly Carter { 10.02.12 at 8:44 am }

The vet did tape my childhood Golden’s ears up. No joke. He was constantly in Green Bay and one summer no matter how much we cleaned, he had to have his beard shaved and his ears taped up. :-(

146 Kristen { 10.07.12 at 1:14 am }

UPDATE: Jax went to the vet for an ear check and a saline flush. He had some swelling near his eye and could not even yawn (his mouth was very painful) Within a few hours of the saline treatment he was hearing some of what I was saying to him but he needed to go back the next day for anistetic so they could do a deep flush of his ears and check his mouth for an absess. The following visit he had no signs of trouble in his mouth and when they did a scope inside his ears they found that an eardrum was ruptured and the other was partially ruptured. The vet said the pain in his jaw was probably due to what was happening in his ear, prescribed oral antibiotics, pain pills and a daily saline flush that I am to continue for a week unless he shows signs of vestibule disease. He has to return in another week for a follow up and further treatment. When I asked the vet if the otomax caused the eardrum to rupture she said it was hard to tell if it happened recently or if it was ruptured prior to otomax due to cronic ear infections. All i know is he was hearing normal before the otomax, went stone def when he was on it and luckily has had some hearing return after his saline flushes. She said it would be at least 4-6 weeks for the eardrum to heal and it would be ” a long road “. When I asked why the previous vet would have prescibed otomax if the eardrum was ruptured she told me that she could not see the rupture until he was examined under anistetic with the scope. If otomax is only to be safely prescibed for in tact eardrums then how can it be safely prescibed without first doing a scope..or otomax caused the rupture. At least he’s recovering, I hope some of you have the same luck with your little buddies regaining hearing after using this horrible drug. BE SAFE AND SEEK ALTERNATE AND SAFE TREATMENT!

147 Kristen { 10.07.12 at 1:18 am }

I’d also like to add that I asked the vet to file an adverse reactions report with the drug company. At the very least the drug company needs to know the accurate percentage of treatments that turn out with these terrible results!

148 Joanne { 10.07.12 at 11:33 am }

Hi Kristen. Thanks for asking your vet to file the adverse reaction report. We all need to do that.

I have no personal expertise, but one thing my vet told me was that dogs MUST be checked thoroughly for any sign of eardrum perforation before Mometamax is administered. As far as I understand things, no ear meds or cleansers are safe to use if the eardrum is perforated.

I’m glad that Jax has regained some hearing and I wish you luck with the long road to recovery ahead. My dog Fred also had vestibular disease, but unrelated to the Mometamax debacle. I hope you don’t have to confront that, too!

149 Kristen { 10.22.12 at 11:35 pm }

UPDATE #2 Jax has regained what seems to be complete hearing. After the initial saline flush, deep flush, antibiotics and take home saline flush that we followed for 2 weeks he returned to the vet for a follow up. Luckily we never had any problems with vestibular disease…the vet was even surprised that he was ok after his deep saline flush. He is now continuing antibiotics and is using eardrops that consist of Trizultra & Keto with Dex Flush. He seems to be recovering very well and has no more jaw pain or swelling near his eye. I hope some of the info here helps other dogs recover from using otomax or mometamax. Please remember to have your vet file adverse reaction claims so the drug company cannot hide behind false numbers and with any luck this harmful drug will not stand the test of time. And to anyone who’s dog was not lucky enough to regain hearing yet please keep in mind that dogs do not feel bad for themselves the way humans do. Hearing or not, they are capable of having happy and interactive lives. Best of luck all!

150 Joanne { 10.23.12 at 12:02 am }

Thanks for the good-news update, Kristen! And thanks for the good advice, too.

151 Dawn { 12.05.12 at 1:15 pm }

Last Thursday I took my 12 yr. old Corgi, Bindi, to the vets office because her ear was red and itching. Her vet said the cause was more than likely due to seasonal allergies, and she prescribed Mometamax. I usually Google every medication the vet prescribes, but I didn’t think there would be any major side effects from ear drops. I read the bottle and box and there were no warnings on either. Unfortunately I did not read the product information sheet inside the box which states deafness or partial hearing loss has been reported in geriatric dogs. If only I had Googled the drug and found these comments I never would have used Mometamax in Bindi’s ears! By Sunday we noticed Bindi was not responding to noises. She was deaf. We took her to the vets office first thing Monday morning, and she saw a different doctor who immediately attributed her deafness to the Mometamax. She gave us a bottle of KET Flush (Ketoconazole) to use once daily to flush Bindi’s ears and we are supposed to take her back for a follow-up visit in 4 days. So far Bindi’s hearing has not returned. She sleeps more now because there are no noises to keep her awake. She is sad and confused. When we let her out in the back yard she eagerly awaits the barking of the other neighborhood dogs so she can join in. You can see the disappointment on her face when she doesn’t hear them barking. I never realized how much she enjoyed her daily conversations with the other dogs until I watch her walk back inside with her head lowered wondering why all of her friends have disappeared. Only I can hear them barking in the distance. We are all learning a new way to live with our deaf dog. Like everyone else, it breaks my heart to know I am the one who administered the drops that caused my dog to become deaf. All I can do is hope and pray her hearing will return someday. If there is is any improvement I promise I will come back and leave a comment.

152 Dawn { 12.05.12 at 1:26 pm }

The phone number I was given to report adverse reactions is:
I have not been able to speak with anyone yet as you reach a recording and are asked to leave a name and number, and they will return your call.

153 Mariel { 12.05.12 at 1:46 pm }

@ Dawn. So sorry to hear about Bindi. I will be wishing her a speedy recovery.

154 Joanne { 12.05.12 at 6:23 pm }

Oh, Dawn. Every one of these reports breaks my heart, and your description of Bindi is especially heartbreaking. There’s some cause for optimism, though. Several of the dogs did regain hearing. Also, remember that dogs adapt to misfortune much better than humans do – maybe because they aren’t hampered by seeing it as misfortune.

Thank you for the phone number. Bindi is already a lucky dog to have you. May she be lucky in this, too.

155 pat { 12.05.12 at 6:56 pm }

Let’s hope Bindi will soon be able to hear her friends again.

156 Dawn { 12.06.12 at 3:53 pm }

I spoke with Dr. Rhonda Rainforth at Merck today. (Here is another number that actually gets you to a human 1-800-521-5767.)

Dr. Rainforth said 85% of YOUNGER dogs regain their hearing. Unfortunately, due to Bindi’s age, her chances are much slimmer.

Here is somewhat of an explanation of what happens when deafness occurs due to Mometamax use. Within the basilar membrane of the cochlea is the organ of Corti. It contains hair / hair cells which act as receptors. The vibrations pass from the stirrup (stapes) to the cochlea. The vibrations pass through the cochlea, vibrating the membrane. The organ of Corti and hair cells are located on its membrane, causing the hair / hair cells to move. The hair cells convert the mechanical energy to electrical nerve energy which passes along the cochlear nerve and on through the network of nerves to the brain stem. The brain transmits the vibrations into sound.

Mometamax destroys the hair / hair cells that transmit the vibration from the cochlear nerve to the brain.

In younger dogs there is a better chance of the hair growing back. As Dr. Rainforth explained, the hair growth is already decreasing in older dogs which causes hearing loss associated with age. There is less chance of regrowth. If the hair / hair cells do not regenerate Bindi will never regain her hearing. Dr. Rainforth said if Bindi is not showing signs of her hearing returning in 2 months more than likely she is permanently deaf.

I also informed Dr. Rainforth our vet prescribed KET Flush once a day, and she said NOT to put anything in her ears. It could worsen the damage. She said one flush to remove the residual Mometamax is all that is recommended. Afterwards DO NOT put anything into the ear while waiting for the possibility of her hearing to return.

I hope this information will be of help to others who are unfortunate enough to be going through the same heartbreaking experience. Maybe it will help others who are wise enough to Google Mometamax before using it.

As promised, I will keep you updated with Bindi’s progress.

157 Dawn { 12.06.12 at 5:16 pm }

I apologize, the phone number I left in my last comment was the same one I left yesterday. The Merck phone number that actually gets you to a human being is 1-800-224-5318.

158 Joanne { 12.06.12 at 6:33 pm }

Dawn, thank you for posting the (corrected) phone number and all of the helpful information. Most of the dogs whose owners have reported deafness on this thread have been older, so the explanation makes sense from that perspective. Also, my vet gave me the same advice about NOT flushing Fred’s ears after the Mometamax had deafened him, but I had already irrigated them once (to flush out the Mometamax), so my inadvertent protocol was the same as recommended by Dr. Rainforth.

The thing is, in Fred’s case it worked. And he started to regain his hearing gradually within a couple days. He was a rescue dog, so we didn’t know his age for certain, but it was estimated to have been around 7 at the time of the Mometamax incident (which inspired this thread). The rapidity of his recovery suggests that it was not because his cochlear hairs regenerated. I’m a little suspicious of that theory, but only because of how quickly Fred (and some of the other dogs who regained their hearing) recovered.

Fred’s eardrums were examined before the Mometamax was prescribed, so I know they were in tact – assuming the vet’s exam was good. In some of the reported cases of deafness, I wonder if eardrum perforation might have been a culprit. Whatever the case, I would never, ever risk that drug again and I look forward to the day when it is withdrawn from the market.

Again, thank you for posting the information here for all to see. And best of luck with Bindi!

159 Dawn { 12.16.12 at 12:55 pm }

It has been two weeks since stopping the Mometamax, and there is no improvement in Bindi’s hearing.

I spoke with her veterinarian to confirm she checked the eardrum before prescribing Mometamax, and she said the ear drum was intact. We also had a 2nd veterinarian look at it last week, and she too confirmed there are no problems with her eardrum.

At this point, we are waiting and praying for any signs of improvement. I will post updates.

Thank you so much for starting this thread! When I Googled Mometamax and deafness this was the first link that came up … I just wish I had Googled it before using it in Bindi’s ears. :(

160 Joanne { 12.16.12 at 11:07 pm }

Thanks for the update on Bindi, Dawn. I just wish it were better news.

161 Liz { 12.18.12 at 11:36 pm }

Don’t give up hope, Dawn! My Agnes was almost 11 when she was deafened by Gentamicin [the part of Mometamax that does the deafening] and she got her hearing back completely after about 2 months and her hearing has been sharp as can be for about a year now. Bindi’s will probably come back!

162 Butch { 12.26.12 at 1:45 pm }

We have a 15 yer old Jack Russell Terrier named Katie. On December 3, 2012 we took her into the vet. He looked at her ears and determined that she had a yeast infection. He cleaned her ears and told us to add 4 drops of Mometamax every night for 7 days. After 4 days we discontinued the Mometamax. We noticed that Katie could not her anything. She had always had the sharpest hearing. She would jump when the door bell rang. She could hear the refrigerator open and immediately head to the kitchen even when she was at the opposite end of the house and a floor up.

She has not shown any improvement in her hearing WHATSOEVER. She just lays around the house sleeping most of the day and has little or no appetite. She used to live to get outside and walk the neighborhood but now when I take her outside to walk she just stands in one place and doesn’t want to walk at all. I am devastated over the whole situation. I can’t believe that I held her as my wife put in the drops and I gently massaged her little ears.

I contacted our vet and he said he had never experienced this before. He is very compassionate and concerned but really can’t offer us anything but hope, which I am quickly losing. I also contacted Merck and spoke with two different vets. Unfortunately their information was not consistent. One said there was a 90% chance of a full recovery whereas the second said that there was an 85% chance but the chances are greatly diminished in older dogs.

Katie’s deafness is the last thing I think of before I go to bed each night, what I think of when I wake in the middle of the night and the first thing on my mind when I wake up each morning.

As we approach 4 weeks since the initial application my hopes for the restoration of Katie’s hearing are fading. I am still hoping for a miracle.

I have been reading this forum since we noticed Katie’s loss of hearing. As another blogger posted I would also request that people follow up and post the outcome of their dog’s case. The positive feedback serves as a lifeline to those of us dealing with this catastrophe.

163 pat { 12.26.12 at 3:12 pm }

Butch, don’t give up hope. Continue to flush Katie’s ears out and give her extra hugs. Teach her some hand signals so she can communicate with you if her hearing does not return.

164 Joanne { 12.26.12 at 11:00 pm }

Ah, Butch – another heartbreaking example of the dangers of Mometamax. I cannot believe that it has not been withdrawn from the market yet! If humans were being impaired at this rate, the drug would have been pulled, surely.

Pat’s advice is good. Also, Katie is probably suffering much less than you and she will enjoy finding new ways to engage with the world. I hope you get your miracle in due time. Please let us know.

165 Diana Kay { 12.28.12 at 11:12 pm }

Well, it looks like I am # 165 on the blog. I too feel so horrible. My 12 year old pit had his first ear infection and I took him to the vet only to get Mometamax . I administered it for 7 days. Day 8 he was totally deaf. I called the vet and took him in. The vet that saw him first was on vacation and I met with another vet in the office. He looked in his ears and said they both looked clean and healthy. He gave him a shot of cortizone for possible inflamation. I came home and a light bulb came on in my thick head. Check the ear drops on the net. I found this blog and became sick. I took him to another vet in another small town near by . I printed off this blog and showed him the post’s. He said that Kango could not of gone deaf from the Mometamax and certainly was because of his age. Really!!!!!! His hearing was as sharp as a pup a week ago! But the vet still defended this horrible medication and said he also used it for years.
I always check medication when the doc gives it to me before I take anything. I NEVER thought to do it for ear drops from the vet. There is NO warning on the box, and reading though the little incert , it never says anything in what I read about a warning of deafness, unless it is in one of the big medical terms that no one would understand unless your were a doc, or a vet.
The post from Dawn #151,156,& 157 seems to be the best one for any evidence for a law suit and the best explaination of what happens when the “Crap” is used on our beloved dogs. Also 165 posts all with the same complaints should have some effect on getting something done to get this OFF the shelfs of the vet clinics. My suggestion is a petition and written complaints after using this stuff and anyone who can get a written statement from a vet would be great.
What do any one of you think about this. I’m soooooooo ready to go after this company. This whole thing is absolutely rediculous that in this day of medical technology we are making dogs go deaf from a yeast infection. We might as well of put acid in their ears. I feel like this is a VERY extreme case of animal abuse from this company. 165 cases of it and who know how many more we don’t know about or the owners are unaware of what has happened to their dogs. Not everyone researches. Gee look how long it took all of us to come to our senses. We TRUST our vet’s opinion to do the right thing. Obviously, they need a wake up call about this junk too!
Your comments please on the petitions.

Thanks all

166 Joanne { 12.29.12 at 11:17 pm }

Really sorry to hear about Kango, Diana. I hope that, like some of the others, he recovers some hearing in time. I think it’s important to note 3 things, as we all do what we can to spread awareness of the dangers of Mometamax. First, there are 165 posts here, but not all are reports of deafened dogs. I haven’t counted the actual number of reports, but there are plenty enough to make anybody avoid this medication. Secondly (and relatedly), there is some rule of thumb the media use to calculate the probable number of injured parties based on the number of reports, and it is something like 100 cases for every reported one. I have forgotten the formula – but we can assume that many, many other dogs have suffered deafness. Thirdly, vets tend to be very defensive in my experience and will not profess things in public that they might note behind the scenes. We can only hope that the sum effect of all the reports and confrontations will eventually produce the result of withdrawing the drug or stopping its prescription.

Meanwhile, best of luck with Kango.

167 Butch { 12.31.12 at 10:38 am }

We first administered Mometamex to our dog Katie four weeks ago today. Since my post last week it appears as though Katie is regaining a small amount of hearing. I am not positive but it does appear as though she is responding to some loud sounds? I hope it is not just false hope. Her lethargy also seems to have disappeared and she appears to be returning to her old, happy ways.

I will keep posting on her condition, as I feel it is so important to pass the whole story of this incident. I know that I have read many posts where people indicate that their dogs have experienced deafness related to Mometax but they fail to follow up with the eventual outcome. I hope it is because their dogs did regain their hearing. I implore anyone that posts on this log to update as your experience is so helpful to others that are suddenly having to deal with this problem.

168 Joanne { 12.31.12 at 11:42 am }

That’s encouraging news on both counts, Butch – her improved hearing and her better attitude! Thank you for updating.

169 Diana Kay { 01.01.13 at 9:47 pm }

Update on Kango. I am reading Butches post with the symptoms of his dog. Kango was given this drug almost 4 weeks ago. He does seem to respond to very loud noise and if I speak very loudly. He also has been VERY lathargic. He has me very worried. His appetite is also very bad. He will not eat his hard food that he ALWAYS ate. We tried changing it to one he used to eat with no luck. He aks as if his jaw hurts and can not chew well. He also had a bout with dirreha. Has anyone else had these problems. We hadve the dirreha under control, but has terrible gas. He has never had these problems. I am feeding him white rice with oatmeal and a little ground beef. Chicken does not agree with him. He moans alot and loves it when I massage around his ears and jaws. I will take him to another vet this week.
This will be is 4th visit in a month after the ear drops. He had none of these symptoms before. He was normal except for the ear infection.
Anyone having these troubles after Mometamax use?
Does anyone know how long this stuff can stay in a dogs system?
Anyones help is appreciated.

170 Butch { 01.02.13 at 6:42 pm }


We also had similar problems with Katie. For Four weeks she had no appetite (btw-she has always loved her food), had soft runny stools and did pass a lot of awful smelling gas. Her appetite is getting better, although still not up to what it was before the Mometamex, and her stools are now pretty solid (I hope this is not too much info).

Today we took a pretty good walk and she did really good. She seems to have regained much of her old spunk. Her hearing appears to be improving, very slightly and slowly. She only hears me about 5 – 10% of the time and only when I am close and loud. She responds better to loud, high pitched sounds. Although I can not be sure she hears me she seems to be more reactive and responsive.

I spoke with our vet at the end of last week and he said that he had a second dog (that was on Mometamex) develop hearing loss soon after Katie. This was only the second time in 0 years that he experienced this and both occurred within a couple of weeks. I certainly hope there is not a bad lot of this medicine.

I am somewhat hopeful. We will continue to love and ork with Katie. I wish you the best with Kango and urge you to hang in there!!!!

171 Butch { 01.02.13 at 6:49 pm }

Sorry about my poor spelling. Regarding the vet I meant to say that this was only the 2nd case in 20 years!

172 Butch { 01.08.13 at 6:09 pm }

This is an update on Katie’s hearing. It does appear as though she is very slowly regaining her hearing, day by day. At first (last week) she would only respond to extremely loud voices that we’re right on top of her. She now responds to noise from across the room. She still has problems telling exactly where the noise is coming from but she does seem to respond and looks around the room to find the source of the sound. She seems to be happy once again, and is very active.

We are more hopeful now. I will continue to post her progress. I hope that soon we will be able to say that she has completely regained her hearing. Keep your fingers crossed for Katie and us as well.

173 pat { 01.08.13 at 6:22 pm }

Great news for Katie! Thanx for letting us know.

174 diana { 01.10.13 at 11:12 pm }

Just an update on Kango. Much like Butch’s Katie, he started to regain his hearing much like her with loud noises on top of him and then from longer distances. Then just a few days ago, he could hear. It has been six weeks since I used Mometamax in his ears. It has been a challenge. He has gone thru an awful bout of diarehha, that we now have cleared up. But even before that, he became very picky about what he would eat. He has had the same hard food for the past few years, never hesitating to eat that plus anything else. He loved potatoes, and now won’t touch them among most everything else. Im not sure what ear drops do to affect his appetite, but I am hoping that it also will return to normal.
He has his spirit back and is a much happier dog. His hearing seems to be about 95 to sometimes 100%.
So Butch, hopefully in about another week you should see the same in Katie. It sounds like she is following Kango ‘s path.
Good luck to everyone!

175 Joanne { 01.11.13 at 3:38 pm }

Diana and Butch, thanks so much for these encouraging reports! I’m sure your diligence with your follow-up posts will give other folks, past and future, the hope they need. What a relief for both of you! May both Kango and Katie continue on the path to full recovery.

176 Butch { 01.12.13 at 6:59 pm }

Okay here is my latest on Katie. Her hearing continues to improve and she seems to be active and healthy. She continues to have bouts of diahrrea and awful gas.

I received a call from the vet at Merck. She inquired about Katie and said that it sounded like she was making progress and should continue to improve. She also cautioned me that there was a good probability that Katie will not fully recover the hearing she once had before the Mometamex.

On my initial call to Merck they said they would reimburse me for the vet bills related to the Mometamex. When I spoke with her the other day she once again told me to fax her the bills for reimbursement. I told her that I would also like to be reimbursed for the cost of the Mometamex. She said Merck would not reimburse for the medication. I told her that it wasn’t about the money it was really about the principal. I just can’t justify Merck or anyone profiting from this toxic crap!!!!! I do intend to press for reimbursement for the Mometamex (I don’t have it in me to call it medicine).

To anyone beginning this journey dealing with their dog and sudden deafness I encourage you to hang in there and have hope. Get medical treatment right away and have the vet flush out your dogs ears once they are sure that the eardrum is intact.

Unless there are any sudden or dramatic changes I will probably not continue to post on this blog in the near future. I will follow up in a month or two and hopefully be able to report that this nightmare is over and behind me.

To anyone out there that is reading this please know that there are a lot of others out there that feel for you and are behind you 100%.

177 Joanne { 01.13.13 at 1:01 am }

Thanks for the report, Butch. And thanks for the good advice, too. I hope that Katie continues to improve!

178 Dawn { 01.16.13 at 4:28 pm }

@ Butch – Bindi’s vet’s office reimbursed the cost of the Mometamax. Have you asked them to reimburse you?

As promised, I’m back with an update on Bindi’s hearing. It’s been just over 6 weeks since Bindi lost her hearing due to Mometamax. After about 4 weeks she started to respond to very loud noises. Within the past week her hearing seems to be about 60% of what it was before using Mometamax. I’ve got my fingers crossed she will regain complete hearing just as it was before Mometamax!

Bindi is so much happier now that she can hear most of her favorite familiar sounds again! (So am I!)

179 Joanne { 01.18.13 at 1:02 am }

Thanks for lifting our spirits, Dawn. Such encouraging news about Bindi!

180 Dorothy Holzkopf { 01.20.13 at 10:44 pm }

Our precious little Yorkie, Daisy, lost here hearing after taking Mometamax over a year ago. We are sick about it and can’t believe the vet did not give us any warning. Has anyone’s dog regained their hearing after so long a time. Daisy will be 15 in February. She, too, is disoriented since her loss.

181 Butch { 01.23.13 at 11:19 am }


Thank you for the information. We have put in a call for the vet and will request a refund.

I last posted on 1/12/13 and at the time I expressed optimism about Katie’s hearing. Unfortunately her hearing has not progressed (if possible it has regressed) since that time. She does hear loud noise that is within a few feet of her, but that’s it.

She went about a week or so with no diahrrea however it has returned with a vengeance. We just spent another $400 at the vet (we are now well over $1,000 since the Mometamax) and it looks like we will be a regular at the vets.

If there is any improvement I will send in an updated post.

Damn Mometamax.

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183 Britta { 01.27.13 at 11:30 pm }

My Westie, Chloe, had a yeast infection in her left ear and was prescribed Mometamax on 01/09/13. Applied in left ear twice a day and right ear once a day (as a precaution per vet) for two weeks. On 01/22, I noticed she was not responding to sounds/noises and at times would just sit a stare at me looking perplexed. I did not make the connection with the Mometamax until Friday. We tried ringing the door bell repeatedly which would normally cause her to have a barking fit and instead, she slept through it or wouldn’t even flinch. Has been sleeping more than usual. Would walk up to her to pet her only for her to flinch because she was so startled. Got no response to her usual words that normally would cause her excitement, i.e., go for a walk, go bye bye, let’s get a treat. That’s when it became sadly obvious she couldn’t hear a thing. Began researching today and came upon this blog. Flushed her ears with Zymox. Will go back to the vet tomorrow for the saline flush and see what the vet’s response/explanation will be. My heart goes out to everyone. Here we try to do our best to keep them healthy only to be devastated that in doing so has caused some much harm. Will keep you posted on the vet’s response and next steps.

184 Joanne { 01.28.13 at 12:48 am }

Britta, Butch, and Dorothy – my heart goes out to each of you and to your dogs, too. I started this thread when Mometamax deafened my dog, Fred. Every time I read about others’ anguish, I feel it so keenly. It seems to me that vets will be the only recourse for stopping the use of this drug. I have had the same experience that has been reported by others when I have tried to persuade my vets to investigate the problems with the drug. They brush me off. Unfortunately, the only whistleblower vet I know is a horse vet. If anybody reading this post knows a vet who would be willing to contact whatever agency oversees small animal vets, that seems to me to be the way to go. Nothing else has seemed to work. The evidence that this drug is dangerous is persuasive. At the very least, vets should be told to warn their clients that it might cause deafness. Ugh.

185 Britta { 01.29.13 at 12:03 am }

Thanks, Joanne. Wanted to give an update on Chloe. (I failed to mention previously that she is 13 years old.) We went back to the vet today and expressed our concern with the loss of hearing due to the medication. The vet explained that it is a side-effect with “all” ear drops. His experience over the last 15 years is that those that lose hearing do regain the ability to hear again. He only had one that did not regain hearing over the last 15 years. We stated that had we known about this side effect we certainly would not have administered it. We inquired about him filing an adverse reaction report, and he stated that he will do that, and we may be contacted by the pharmaceutical company. He checked both ears and found the right ear was fine, no residue and eardrum intact. The affected left ear showed medication residue so he flushed it and re-checked feeling he had gotten the remaining residue. He gave us a bottle of Epi-Otic for further use. He explained that it is the Gentamicin that numbs the eardrum and the mineral oil coating the hairs that causes the hearing loss. He felt she would regain her ability to hear, and to give it approximately four weeks from the last dose. I requested our money back on the medication, and he agreed no problem, they would reimburse, and then my husband asked for a refund for the initial office visit, which he also agreed to. Earlier today, she did respond to a high pitched whistle, but still no reaction to the doorbell or knocking. We are trying to remain hopeful.

186 Joanne { 01.29.13 at 12:23 am }

Thanks for the update, Chloe. Very informative and hopeful, too. (Epi-Otic is what I used to irrigate Fred’s ears when I realized that Mometama had deafened him, and I use it regularly to maintain clean ears in order to avoid anymore run-ins with Mometamax or other dangerous ear meds.) It sounds like you’ve got a good vet!

187 Beth { 01.31.13 at 8:06 pm }

I am so sorry for all of you and the problems you have experienced, but I want to thank you for sharing your stories. See, a couple days ago, my beloved pit was suffering from itchy ears and head shaking. A visit to the vet got him a good ear cleaning and he came home with – you guessed it – a bottle of Mometamax. Also, he received Revolution for ear mites. I missed the second dose of Mometamax, and decided to research it online out of curiosity. That’s when I found this site! I will NOT be giving him or any other dog Mometamax, and I’m telling every dog lover I know, including my vet. I hope your dogs that were adversely affected by this damnable medicine do regain their hearing, but why is this product even still on the market? Again, thank you all for posting, you have probably saved countless dog owners a river of tears and regret.

188 Joanne { 02.01.13 at 12:26 am }

Thank you for writing, Beth. After all the bad news on this thread, it is so good to learn that it has produced some benefit. And good for you!

189 Mithila { 02.02.13 at 5:27 am }

Hi! I found this post about two months ago now and it was one of the most informative and honest sources of the evident dangers associated with gentamicin in elderly dogs! I just wanted to share some good news among all the very sad news, which might give some other dog owners in our situation a little bit of hope!

My baby, Fluffy, is a cavalier and obviously has big floppy ears so is prone to ear infections. He was prescribed easotic (which is a more commonly prescribed gentamicin antibiotic here in Australia) back in mid-December, and was on it for a full five days. Unfortunately, he didn’t start to exhibit and signs of hearing loss until the day he finished his antibiotics! Anyway, about three days later he seemed completely deaf. I was devastated and spent a lot of time reading blogs and articles like this one about all the dangers and was absolutely kicking myself for not reading up about it a bit more!

Well yesterday was Fluffy’s eleventh birthday and I am VERY pleased to say his hearing is getting much, much better. Yesterday he heard me opening the fridge door and ran over to demand I get him a snack. His hearing still isn’t completely back, and it may not ever get as good as it was (his hearing was perfect before the medication), but he can hear most things now, which is a huge relief.

Anyway, hope this provides a little comfort for anyone reading :)

190 Mithila { 02.02.13 at 5:30 am }

Oh, and I forgot to mention, I’ve since convinced my local vet clinic to stop prescribing it all together! Which is also a huge relief!

191 Joanne { 02.02.13 at 4:29 pm }

Oh, Mithila – thank you for this very hopeful and invigorating news! Hurrah for you and Fluffy!

192 Amie { 02.18.13 at 2:14 pm }

I am so glad to have found this blog. Our 12 year-old doxie has gone deaf after 7 days of Mometamax. We had no idea of this possible side effect and have researching the internet like crazy to find out if this was part of the process of CVD, which she was experiencing when the vet prescribed the Mometamax.

Hearing loss is a complication of CVD it but didn’t make sense as she only had infection in one ear and has gone completely deaf. Like so many others, we wait patiently to see if her hearing improves at all.

193 Joanne { 02.18.13 at 5:13 pm }

Wishing you the best of luck, Amie. The recent posts here have indicated that there is good cause to hope for hearing recovery.

194 Vena Ramsdale { 03.05.13 at 1:16 am }

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195 Suzette { 03.05.13 at 7:50 am }

Hello I have always been prescribed Mometamax for my dogs and yesterday again for their ear infection they get from now and then I just by accident fell upon your webpage while looking to buy some more is there anything else to use that is safer for ear infections? Please help I don’t want to hurt my dogs.

196 ZVW { 03.12.13 at 1:10 am }

I found this website when I realized my 11.5 year old English Bulldog was entirely deaf after 4 days of using Mometamax to treat an ear infection. Although he only had an infection in one ear, the vet told us to use the medication in both ears “just in case” – which we did, unfortunately. So, he became deaf in both ears as a result. We took him back to the vet, and then to another vet for a second opinion. We stopped the medication immediately and started doing ear washes twice daily with an optic solution from the vet (also to help with the ear infection, which was still an issue). I called the manufacturer of the Mometamax and filed a case with them. I talked to a vet from the manufacturer and they told me if the hearing does come back, it will do so in 3 weeks or so. Weeks went by and his hearing didn’t improve. We tested it daily by blowing different ranges of notes on a harmonica from the other room (where the dog could not see the harmonica or us blowing on it). His hearing eventually DID start to come back after 3 months had passed (from the last day that the medication had been administered). It came back slowly over the course of one week and has not continued to improve since. It has now been about 6 months. I would estimate his hearing returned at about 65% of what it was prior to the Mometamax. He can hear well enough but isn’t quite as responsive as before. I will take that, though! We were absolutely overjoyed when we realized he was starting to hear again, after 3 months of crying and agonizing about his deafness.
I wanted to give someone hope that even if everyone tells you that your animals hearing will not come back (we had been told that by one of the vets we saw!!!), the possibility of recovery DOES exist. It took longer than everyone said it might take, but can get better!

197 Chris { 03.13.13 at 1:58 am }

What if our dog’s hearing does not come back? Our vet failed to mention that this was a possible “side effect” of Mometamax, although he did not seem at all surprised to hear that our dog had become completely deaf after being administered the drug. How can Schering-Plough continue to manufacture this medication when so many dogs have lost their hearing as a result of it? Has anyone considered taking action against this company?

when so many dogs have lost their hearing as a result of it?

198 pat { 03.13.13 at 9:18 am }

I am so sorry for all who post about their dog’s hearing loss and pray your pup’s hearing will return.

Remember, your pup responds to your emotions so please try to stay loving and calm even when your heart is breaking.

Lesson for all of us is that we should investigate ANY canine OR human medication before we use.

Zymox (OTC) and Tresiderm both work for ear infections and don’t cause hearing loss.

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205 Denise { 04.17.13 at 9:48 am }

Greetings! My 8 year old pug was recently trreated at the vet for an ear cleaning/ear infection, and received one dose of Mometamax (4 drops in each ear) while there. I picked her up that afternoon, and the next morning gave her another dose. It was then my husband and I noticed something was up, as she was not running to the ice maker to get her little chunks of ice, nor was she reactinf to our commands. I became frantic, searched the internet, and found this blog. I freaked and took my puggy to the vet, who was devastated and advised he had never seen this happen in his practice. he was extremely supportive in working with us, and was genuinely concerned. I called Merck at the number stated above in post 157 (The Merck phone number that actually gets you to a human being is 1-800-224-5318.) and filed a report. the vet there, as well as or vet, advised to remove any product that we could with a damp cloth, but not irrigate or flush the ears with anything in case her eardrum was compromised. It has been a sloww, worried week and a half, but I am very pleased to report Hazmat’s hearing has come back almost completely!!! She now hears us come in the front door (where intitially she slept right through it til we touched her), and is responding to voice commands with her expression filled wrinkled forehead and sideways turn of her head. We are delighted!!! However, we will never use this med again, too risky. What’s weird is she had used it before, and we had no problems then. Go figure!! Just wanted to tell others about our experience and to not despair, it can get better. Best wishes to anyone else who goes through this, it is very scary!!

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208 Cathy { 04.27.13 at 10:36 am }

My dog cookie can no longer hear after the use of momentamax! The waning on the product information says that it has been associated with deafness or partial hearing loss In a small number of sensitive dogs. The hearing deficit is usually temporary. What is the small numer? I will tell you, it is ONE . ONE pet is one to many! My dog cookie is 12 and before this medication could hear EVERY THING!! If i was in the kitchen trying to sneak a potatoe chip out of bag ( I can b as quite as a mouse ) my DOG would be at my feet as soon as the chip clip was taken off!! She always let me know when someone was coming to the door before they rang the door bell ! She was as sharp as a razor! So after a few days on the medication I noticed she was different! I thought it was because she was sick. The sleeping and not responding to me like she always does. She was getting spoiled and I thought she was milking it! Then when I finally noticed, it was like a slap in the face. We had ordered a pizza (5 days of putting this poision in her lil ears) and when the pizza man came to the door no response to the door bell! I went into a panic mode making up all kinds of excuses of why she didn’t hear the door bell. We started to test her and my GOD she could not hear us.. I never imagined it was the medication that the vet had prescribed. That night I googled dogs ear infection loss of hearing . And the medication that she was given popped up! I could and can NOT believe what I have been reading for hrs and now days. How could this happen! I took cookie in to the vet as soon as the doors opened. I was told by her doctor that this is VERY RARE! And it was just build up of the medication in her ears. So she flushed her ears out and said her hearing should return in a week or so. The first visit for the medication mind you was 270 dollars and the second to flush her ears another 170 dollars. I walked out of the office feeling as if I had been slapped in the face again!! I should have done this and done that and I didn’t! Now cookie can’t hear. I continue looking for a cure & looking for answers . Any help I would truly appreciate . This is my baby and I have to do something for her. This medication is poison dont use it. The warning is a joke ! May cause loss if hearing in sensitive dogs and its only temporary ! That’s crap ! It’s not on the box my vet did NOT even mention it as a side effect i was told she may lose her appetite. If it had only been that. She lost her hearing. I’m heart broken . Please pray for my baby cookie and all the other babies that have been poisioned by this medication mometamax!

209 pat { 04.27.13 at 4:29 pm }

Praying for Cookie

210 Dawn { 04.28.13 at 11:31 am }

I can soooooo relate to what Cathy is going through. Back in December I reported on this blog that my Corgi, Bindi, had also been deafened by Mometamax. Bindi’s hearing has completely returned! It took over 3 months before she regained all of her hearing. There is no sneaking food anymore because Bindi can hear every little thing just like she used to! (Thank God!) I urge you Cathy to please call Merck and report what happened to Cookie. 1-800-224-5318.

211 Wrenn Simms { 05.30.13 at 11:21 am }

I wish I’d seen this 2 weeks ago. My vet prescribed this for an ear infection for my 13 1/2 year old golden. I stopped giving it to him 7 days in (the vet said to use it for 14 days). He’s deaf now. The vet *says* his hearing *should* come back. I’m very upset.

Note – While my golden is 13 and a half, he’s in fantastic health. He has a little bit of arthritis in his left front leg, which is much helped by glucosamine and condroitin suppliments. He’s an *old* dog who’d rather run than walk. And does. ALL the time. Everyone thinks he’s half his age. I did some preliminary testing — in case the arthritis gets worse – and found that his heart, liver, and kidneys are all extremely good.

And he may well be deaf permanently now, due to prescribed medicine from our vet. Sigh.

212 pat { 05.30.13 at 8:01 pm }

Teach hand signals and rinse his ears every day. Hopefully his hearing will come back. Give lots of reassuring pats. Hard lesson for all of us. We need to ask about side effects of meds for our pets as we do for ourselves.

213 Doug { 06.05.13 at 8:58 pm }

I had the exact same thing happen to my energetic 10 year old retired seeing-eye-dog golden retriever (guided a blind man for 6 years). My dog is a better humanitarian than anyone I know. I use a very good vet clinic and I can’t believe they weren’t aware of this issue and prescibed Mometamax. His hearing did come back, but I don’t think it’s as good as it was before giving him Mometamax. After reading your article, I would recommend first just using ear wash for awhile to see if the ear problems clear up without antibiotics.

214 Wrenn Simms { 06.15.13 at 11:41 am }

Okay. A couple weeks later. Scooter has some hearing back.

About a week ago, he responded to a loud hand clap. Earlier this week, he responded to the annoying door bell for the first time since this started. I don’t think his hearing is as acute as it had been, but he CAN hear.

I will note, he never seemed upset about this at all. He’s always a happy pup. What he had been doing was positioning himself so he could see our faces all the time.

Oh, and pat? I taught him hand signals along with verbal commands from the time he was a pup. There are times when I don’t want to have to verbalize ‘sit’ or lay down’ or ‘stay’ in public.

Scooter is a very large, from a field golden sire and an american golden dam – and he grew larger than both. (26 inches at the shoulder, with correspondingly body length. He fluctuates from 92-97 lbs.) Luckily I knew what I was dealing with. Though, he was still jumping 3 foot fences when he was 10 years old (for cause. You know… Cat. Squirrel. A windblown leaf.) At 13 1/2, he still wants to run a couple times a week.

215 pat { 06.15.13 at 1:39 pm }

Glad Scooter’s hearing is coming back.

216 STEWART { 06.28.13 at 10:46 pm }

I am glad that Google helped me to find this web page. Now I have to decide whether the risk of my precious dog dying of an infection is greater than her being deafened by Mometamax.

Mometamax – I read about its scarry side effects, etc. and am not sure that I want to use it. See http://www.merck-animal-health-usa.com/products/130_163343/productdetails_130_163679.aspx and MOMETAMAX.pdf.

I took Goddess to her 2013/Jun/27 10AM appointment with vetenarian Nancy HARBACH at the Five-Points Animal Clinic , 900 Harden St, Columbia, SC 29205 (803) 799-4302. She weighed 47.1 pounds. The vet charged me:
$49 for the visit,
$3 prescription fee,
$19 for an injection of Dexamethasone
$32 for a 15 gram bottle of Mometamax
Total $103.

She also tried to sell me a $5 pill (Capstan?) to kill fleas (I gave my dogs Trefixis two weeks ago) and a bottle of antibiotic pills (the Publics grocery store gave me a free bottle worth about $12).

217 pat { 06.29.13 at 7:07 pm }

Try Zymox for your pups ears in the future. It’s been working for my goldens.

218 Sarah { 06.30.13 at 2:50 am }

I wish I had researched this drug before using it on my dog. She is a 10 yr old shep/lab/pittie mix. She had a yeast infection in her ear about a year ago and we were prescribed Mometamax. No side effects at that time, but the infection reoccurred and we were again prescribed it. Like all the other stories on here, we noticed something was off. We didn’t freak out right away b/c we thought she must just be getting over the infection. But then it became apparent that she wasn’t hearing us call her name. And then I found this website and my heart is breaking that I did this to her. She is not completely deaf (yet anyway), but her hearing is significantly impaired. I have left a message with her vet and will bring her in first thing in the morning (it’s late now). She’s actually been off the drug for 2 days and we rinsed out her ears earlier. I am hoping that her condition will improve, but either way I should have been made aware of this VERY serious effect of the medicine. And why was it prescribed in the first place knowing she is an older dog???? It’s sad when we can no longer trust those whose job it is to heal. I am wary of prescription drug companies anyway. I just never thought I would have to also be wary of a someone trained to HEAL. I will update if her condition worsens/improves.

219 pat { 06.30.13 at 2:33 pm }

Hopefully her hearing will return. Let us know how she is doing.

220 Lisa { 06.30.13 at 3:11 pm }

I’m so sad to be reading these posts now, as my sweet Golden Retriever lays near me, with new hearing loss. It came on quickly after the vet prescribed Mometamax and I didn’t look up this new medication (new to us). Since “Bear” is 13 years old, we thought it was age-induced. But I became suspicious finally, and found these posts.

221 David { 07.09.13 at 8:01 pm }

I have a 3 yr old golden (Oakie) who’s been having ear problems since she was a puppy. Our vet also perscribed Mometamax. Thankfully our dog has not experienced any hearing loss (that we know of), and due to her frequent ear infections, we have used the Mometamax quite a lot. Here’s a possible reason. I don’t believe that her ear needs to be flooded with the amount of this stuff that they prescribe for it to be effective. Rather than squeezing it in for 2 seconds or putting 15 drops of it into her ear, I use only enough to coat her ears and I apply it with my pinky finger since I can get it into her ear. I have thin fingers and this method works as well as flooding the ear. I do not apply enough of it to flow down onto her ear drum, only enough to coat her ear with a thin coating, and I do cover her entire ear. I do not put any drops into her ear. I only apply with my finger once a day for about 3 to 5 days at most. Her ear infections go away after a few days of applying the Mometamax this way and as soon as her ear has cleared up I stop the treatment. The infections do not come back until we take her swimming or occasionally after she gets a bath but thats not common. It seems that the infections happen after she swims in a lake or other outside bodies of water. I do check and clean her ears often and the older she gets, it seems that the infections get less frequent. My point here is that some dog’s may be experiencing hearing loss due to the large quantity of Mometamax that they tell you to put in their ears. Using a fraction of what they prescribe to our dog seems to work just as well and thank God she hasn’t had any hearing loss. I am however looking for an alternative to treat her with. After reading all these reports, it seems to me that the older dog’s are the ones having the bulk of the problems with loss of hearing. It may be a coincidence too so I will keep looking for an alternative, but until I find one, I will keep using the Mometamax in very small doses. It works just as well for me and hopefully it will for you too and not mess with your pet’s hearing. This is just my experience. It may or may not work for your pet but if it does, just maybe applying small doses will prevent your pet from a hearing loss issue. Best of luck to you all and I hope that your pet’s recover fully if you have had a problem with this drug.

222 David { 07.09.13 at 8:14 pm }

To Stewart, post #216, I’d be looking for a new vet if I were you. My vet charged me $12 for a 15 gram bottle of the Mometamax, no prescription fee, $30 for the check up and office visit, and they clipped her nails for free. Look for a vet who truely appreciates that you’re taking care of your pet and avoid the ones who just try to soak you for every penny they can. You’ll be able to tell after actually talking to the doctor and a visit or two. Good luck.

223 Michelle { 07.15.13 at 7:03 pm }

I wish I had researched this drug. My 11 year old chow/retriever mix got an ear infection (Yeast) after a couple of day on the drops, he started acting odd. I called the vet & they changed to a different ear drop, 2 days after the second ear drops had been in use, I realized my dog has lost his hearing. I am just beside myself. This was a vibrant, vocal, sure footed dog, who now has become, nervous, paces, won’t bark , and is needing to be touching me at every moment, as he can’t hear me & wants to know where I am. It is pitiful to watch. It has changed his demeanor completely.

224 Bob Hill { 08.12.13 at 11:52 pm }

This is pure Poison,Not only has it rendered my dog def ,it’s damaged his liver,Its costing me Thousands to keep him alive,He’s my baby and I did this to him,I will never forgive myself for not checking this med out first.Please don’t ever give this to your Pet.

225 pat { 08.13.13 at 7:20 am }

So sorry. Vets need to be more cautious when prescribing medications and we pet parents need to do our research before administering.

226 Joanne { 08.13.13 at 8:40 am }

It’s clear from this thread that Mometamax is NOT WORTH THE RISK. The other wisdom we can all take from the ordeals of those who have posted is careful ear care. We clean our dogs’ ears weekly to prevent any need for treatment. Does anybody have a link to a good article on ear maintenance? Might be useful.

227 Nicole { 08.16.13 at 8:17 pm }

Joanne, I save a beautiful cat who was lost from her previous owner in the middle of our Arizona summer heat 112 degrees, my neighbor was looking after her for a few months but move to a rental home and was not able to take her with him. To make a long story short, Bella is having some breathing problems and scratching ears and shaking head. Took her to the Vet and she prescribe this terrible drug….Went on line and I came across this web site and wrote to Dr. Dym.
He suggested Zymok Otic HC. I am still reading the comments (all good) I am still scared and can’t decide what to do. I have the impression that Bella has some kind of Allergies/Asthma and Dr. Dym is putting her on antihistamine Chlorpheniramine, I do not like the side effect, does any one has some comments please post.

228 Nicole { 08.16.13 at 8:47 pm }

Oh, I forgot to say that in one of those comments someone was using Apple cider vinegar and water. She posted it to Dr. Dym and he said that it was OK to use white vinegar & distilled water 5o/50. I take ACV myself everyday 1 table spoon of Apple Cider Vinegar/1Tbsp of raw honey/Agave. I gave vinegar to my dog and also the cat who was doing much better, but then she did not want to drink it any more.
I stopped coughing no more acid reflux no more mucus breathing so much better. dog/cat I drop per ounce of water.Abby has no more crying eyes

229 Karla { 08.18.13 at 5:20 pm }

Hello – I just got back from the vet a few hours ago. My dog KC is a black lab/hound mix with huge long ears. Her brother Tanner, tends to chew on her ears and often licks the inside of them so they are constantly wet. She has had ear infections before but today is the first time she was proscribed Mometamax. I did give her one dosage – but looked up the med and found this site. I will be calling my vet first thing in the morning. Thank you all.

230 Karla { 08.18.13 at 5:21 pm }

prescribed….sorry! I was shaking as I was typing this! This is horrible.

231 pat { 08.20.13 at 7:09 am }

I’ve gotten home a couple of times to see Mometamax or one of its cousins and had to go back to vet for an exchange when I get so buy talking with a vet I forget to check what they put in the bag. I now use the over the counter product called “Zymox” with great results.

232 Teresa { 08.26.13 at 11:45 pm }

I have two 12 yrs old goldens. We lost one 4 months ago to cancer :(
he had terrible ear infections for most of his life and was on Otomax and never had one single problem. Our other golden NEVER had a ear infection until last week. My husband took him to the vet and they gave him Otomax and after a couple of days I noticed he was not at the door when we can home, or even when I called him. thinking the medicine/infection just has his ear sort of clogged, I kept giving him the Otomax but just in the morning. Then the other day I can home and called him over and over and louder and louder. Went to his sleeping spot in the bathroom and truly thought he had passed away!! I touched him gently and he jumped out of his skin. I knew something was wrong. Then tonight he still was not hearing and I got on the computer and googled hearing loss with ear infections and found this site!!! and then freaked out! I called my vet and he said he had only seen one case.(one too many). He said not do give the meds or put “anything” in his ear. I asked him if I should flush his ears and he said no. He would call me in a week :( I will be calling another vet and the drug Manufacturer to see what I am suppose to do to get the crap out of his ears!!! I cannot imagine why it affected one of my goldens and the other was on it for 12 yrs and never had any side effects. I am just praying he gets his hearing back!!! He has been through a tough 4 months without his beloved kennel mate of 12 years.

233 Joanne { 08.27.13 at 1:06 am }

Oh, Teresa. All of the posts on this thread move me so much, but yours is especially touching. As the originator of the thread, I really empathize with your feelings and I’m hoping with all my might that your dog recovers his hearing in time, as many of the other dogs have done. My vet gave me exactly the same advice as yours gave you, but I had already irrigated Fred’s ears with EpiOtic before I could reach him. I did not irrigate further after speaking with my vet. In any case, Fred gradually regained his hearing. I sure hope your dog has the same good luck, but I know he’ll be glad for all of your affection in the meantime. Please keep us posted.

234 Veronica { 09.18.13 at 6:59 pm }

My dog had a ear infection and couldn’t hear at all. We just thought that he was ignoring us for awhile, but he usually didn’t so we soon got worried. By week 2 of him “ignoring” us we called up a vet and she subscribed Mometamax to us. We began administering to our dog and nothing happened. By a few weeks later. he still could not hear at all. We went to the vet again, and she told us that our dog was to remain deaf forever. Therefore I DO NOT recommend Mometamax, because if anything, it worsens the infection.

235 Krista { 09.24.13 at 7:49 am }

Wish I had seen this before I faithfully administered this to my 12 year old fox terrier. She went from being able to hear you pour cereal in a bowl from another room to being completely deaf after two weeks of Mometamax. So sad, and I feel so guilty. The thought that they trust you so implicitly and you harm them is heartbreaking. I’m sure she’s wondering where all of the sounds have gone :(

236 Joanne { 09.26.13 at 1:05 am }

Krista and Veronica, I am so sorry that you are both facing this heartbreak. Everybody describes it the same way, and since I experienced it myself, I know it too well. I just hope that your dogs get the luck that some other dogs have had and regain some or all of their hearing.

We all need to let our vets know that the risks associated with this product are not acceptable.

237 Brandon { 09.29.13 at 3:07 pm }

This has happened in the past week to my 13 year old bichon. She has had ear problems for a while, and has taken this same ear ointment several times in recent years. She was taken to the vet on Tuesday (today is Sunday) for an ingrown nail, but he also looked at her ears. They didn’t look good, so he gave her a treatment of the medicine and prescribed to use it daily. I wasn’t there, but apparently he stuck it down really deep in her ears.

The brand that he gave us was Butler Schein Otibiotic Ointment, and its main ingredient is Gentamicin. It’s the exact same one as she’s had in the past.

Looking back, I realize that probably on Wednesday, she was already getting deaf, or maybe even completely there. But it took until the weekend to put it all together and realize that that was what was going on. We just figured she was sleeping heavy and being disobedient.

Today, Sunday, I can’t get her to respond to any noise. When I try something really loud, like a doorbell or alarm, sometimes I think she is reacting. But I think I’m just hoping too hard and that she is probably reacting to something else in those few cases. Otherwise, yelling, clapping, hitting the walls– nothing.

So she had her dose on Tuesday, Wednesday, Thursday, and Friday.

I couldn’t find Epi-Otic locally last night, so I just got an all herbal/ organic ear wash. I was afraid of using something too harsh for fear that it would make it worse. It says to use ten drops in each ear. Other options I had were R7 Ear Cleaner and Zymox. Any chance of those helping her better?

I’m calling my vet first thing Monday and I’m sure I’ll be taking her in, as well. I drive about an hour away to get to him, and I live in a medium sized city, so there’s plenty of vets I could choose 15 minutes from me. But he’s affordable and a very caring person. And he’s done a lot of good things for her in the past. So hate the idea of this being from his own negligence. I just hope he doesn’t give me the line that it’s just because she’s getting old bit. If he does, it’ll be time to find someone in my city.

Thanks for reading. If you have any advice on cleaning her ears today, please let me know.

238 Joanne { 09.29.13 at 11:40 pm }

So sorry to hear about your dog’s hearing loss, Brandon. I vaguely recall a vet telling me some years ago that vinegar and alcohol could be mixed and used for ear cleaning, but you should check with your vet before you try it. Best of luck to you!

239 Brandon { 09.30.13 at 10:52 pm }

Thank you Joanne. I’m very, very, very happy to report that she’s gradually getting a good bit of hearing back. We took her to the vet this afternoon, but we’ve noticed it since late yesterday and this morning. I do feel confident enough in my vet to continue taking her to him. He gave us some ear wash that is still anti-fungal, but much less harsh. And that actually works as an ear wash, as it’s a plain liquid and you squeeze it into the ear canals. I’ll report back with the name later in case anyone wants it.

After going to the vet, she’s reacting to some regular level speech, and not just loud noises like alarms like she was yesterday and this morning.

240 Joanne { 09.30.13 at 11:40 pm }

That’s wonderful news, Brandon! Thanks for reporting it. Given the amount of traffic on this thread, I’m sure that many would find the name of your ear wash helpful. Let us know.

241 Brandon { 10.01.13 at 2:32 pm }

The earwash is called TrizUltra + Keto (flush) by a company called Dechra (dechra-us.com). Active ingredients are ketoconazole and I guess a compound that they have patented called TrizEDTA (tromethamine USP, disodium EDTA dihydrate). Also contains deionized water and carbopol aqua.

It can used used as an ear flush or a skin flush. And it’s for dogs, cats, and horses.

It’s also an antifungal, so it should also take care of the original intent of the Gentamicin medicine– to clear up an ear infection.

This appears to be the exact product on Amazon, though the bottle says “Available through licensed veterinarians only”, so use your best judgment. Reviews look good.


242 Terry Lanham { 10.01.13 at 5:38 pm }

I have a bulldog 11 years old with excellent hearing. As bulldogs have their health issues this is the first ear infection. She has been on this med for 7 days and now is def as many of you have stated in your posts. Teia has always come when I called she’s mama’s little girl but almost from day 1 was acting strange. I like some of you have said I touched her thinking the worst that she was dead and when I did she jumped like a bolt of lightening. I cry thinking the worst. I am calling my vet tomorrow due to they are closed.

243 Joanne { 10.02.13 at 1:20 am }

Terry, I’m so sorry to hear about your dog. I hope she has the good luck that some dogs have had and recovers her hearing.

Brandon, thanks for the helpful information! I have horses, dogs, cats, and almost every product on the Amazon page, but have never heard of the ear wash. I’ll look into it.

244 Tom Martin { 10.04.13 at 11:20 am }

I had a similar experience with Mometamax with my 12 year old Lab. Mometamax was prescribed by the Vet to treat an ear infection and aftert only two days her hearing was gone. I took her back to the Vet and she quickly agreed that it was the Mometamax that caused the hearing loss. Her ears were thoroughly flushed out and they contacted the drug manufacturer (Merck). An on staff veterarian authorized four acupuncture treatments. It seems that between some natural healing and the acupuncture, Molly has regained most if not all of her hearing over the course of two months.

245 Joanne { 10.04.13 at 5:24 pm }

Tom, thank you for posting about your positive outcome and how you achieved it. Looks like many justifiably distraught people could use the encouragement.

246 Carin { 10.16.13 at 12:01 pm }

My vet just prescribed mometamax for my sweet dog … I so appreciate everyones comments and because you were so diligent looking up information on what happened to your dogs My sweet Camu will not have to suffer the trauma.
What bothers me more than anything is there is no accountability … we trust our doctors and vets to provide healing products that are not dangerous to our dogs and when they do the opposite there is no accountability … I wonder how we can change that … How can we be informed before we purchase a product of the dangerous side effects. If I was a vet I would make it my business to know after all my goal would be to assist you to help your dog stay healthy! You have to wonder what their goals are.

247 pat { 10.16.13 at 1:50 pm }

We should go online and investigate meds before using them

248 Tracey { 10.29.13 at 7:41 pm }

My 9 year old pug lost his hearing after 4 days on mometamax. He has been back to the vet and they say he does have some hearing but he can not hear anything I say. If I yell his name he acts like he hears something but doesn’t know where the noise come from. I am wondering if it would help to wash his ears out but I don’t won’t to make matters worse.

249 Joanne { 10.31.13 at 12:52 am }

Tracey, his hearing might return over time. Perhaps it is already doing so? You need to be certain that his eardrums have no perforations before you try to irrigate them, so I wouldn’t want to recommend doing so without knowing. If you are sure that his eardrums are intact, you can try irrigating his ears with something like OtiClens or one of the other non-medicinal ear-cleaning products available in pet stores. Best of luck to you!

250 Tracey { 10.31.13 at 12:04 pm }

Joanne, thank you for the input. I did take him back to the vet and his eardrums are intact and he now has me rinsing his ears once daily with a cup of warm water and 1 tsp of vinegar. His hearing has not improved as of yet but I am still hopeful.

251 Joanne { 11.03.13 at 12:02 am }

How’s he doing now, Tracey? I do recall being told once that a vinegar and alcohol mixture will work for irrigating ears, but I’ve never been able to remember how much of each to use. Hoping for good news from you.

252 pat { 11.03.13 at 8:23 am }

@Joanne, that would be a painful mixture. A 50/50 solution of vinegar and water will help acidify the ears when there is a yeast infection.

253 Joanne { 11.03.13 at 11:06 pm }

Thanks for the clarification, Pat. It’s been a long time (at least a decade) since I had the advice, and I wouldn’t have tried it without consulting a vet first. Maybe the vinegar/alcohol mix was for ear swabbing? Anyhow, nobody should rely on the idea without checking with a vet.

254 Beth { 11.10.13 at 10:30 am }

On 7/8/2013, my beloved pug Romeo woke up deaf. After taking him to the vet early 7/6/2013 to have his ears checked because of incessant shaking, he was prescribed Mometamax and given one dose. I remembered a friend of mine experiencing the horrible side effects of a med used in her dogs ears, (she has comments on this thread around 151) so I researched and found out indeed ours was given the same. We called the vet, explained our concerns and were told, ” That’s very rare. We’ve only had that happen with one other dog.” We took him in, has his ears flushed and she prescribed another medicine.
Romeos hearing was super keen. He could hear our car turn the corner, birds a mile away, dogs barking on the adjoining farm, and my kids feet hit the top step in the morning. If the words “go”, “ride” “treat” “potty”, “walk” or any of the other dogs in the neighborhoods names were mentioned, he was up. For 3 days he stared at me with a blank look when I talked to him. He looked like he was lost, searching to understand. We scared him if we came up on him from behind. He just stared out the window. He’s 5 years old, nowhere near the age a dog should go deaf naturally. I thought I was being responsible. Why didn’t I research better? Why didn’t the vet tell me this was a side affect? I thought my precious friend would never hear his treat jar being rattled, my husband tapping on the door, or his leash jingling again. But thank God, after 4 days, we noticed a slight improvement and he continued to improve over a month until his hearing is now completely restored. I am convinced that if I had given him the complete round of Mometemax, his hearing may have never returned. Please research this drug, I don’t want anyone to go through watching their beloved friend go through something so horrible.

255 Joanne { 11.11.13 at 12:58 am }

Beth, thanks for posting your painful story with the hopeful ending. It really seems to me that your vet was running an unreasonable risk if the clinic had already had a dog deafened by it. Only one dog? That’s sufficient to stop prescribing the drug. Thanks for helping to warn others, and I’m so glad that Romeo regained his hearing.

256 Kathe { 11.28.13 at 12:13 am }

I just had the same horrible experience with mometax for an ear infection that my 13 1/2 year old shi-poo sprinkles had . She just suddenly was completely deaf after about 8 doses of the medicine. When I brought her back to the vet he said it was not possible it was from the medicine that it was just old age. That did not make any sense to me why would a dog suddenly go deaf. I called a specialty vet to see if there was an ear specialist. They said no but to call the manufacturer. When I called Merck I spoke to dr Elizabeth Dole who was very compassionate but didn’t seem surprised to hear what had happened even though she said it was a very rare side effect . I don’t care about statistics my wonderful sweet dog is now completely deaf. I feel like I’m living in a nightmare . I just can’t believe it. I feel so sorry for Sprinkles she is so bewildered she doesn’t leave my side . I am hoping that we will be amount the lucky ones that get their hearing back. I will be happy to join anyone else in getting the message out to get this drug off the market.

257 Kathe { 11.28.13 at 12:19 am }

Sorry I spelled the medicine wrong it was mometamax 15 g

258 Joanne { 11.28.13 at 5:22 pm }

Kathe, I am so sorry to hear about poor Sprinkles and I’m hoping with you that time brings back her hearing. This ordeal is probably easier on her than it is on you, though. She is lucky to have you nearby and clearly she knows it. Obviously from the messages on this thread, deafness is not a rare side effect, and we all need to pester our vets about helping us get rid of its use! Best of luck to you.

259 Edna Chadwick { 12.02.13 at 1:05 am }

I have a rescue chihuahua cross dog, Sunni from California. She is about 8 to 9 yrs old. I’ve only had her around four weeks. Took her to the vet because she had an obvious ear infection. The vet, a very good holistic one prescribed Mometamax. I hadn’t heard of it before and gave it immediately. I have since researched, looked at the ingredients it and came across this site. When I saw that Gentamicin was the major ingredient I became a little concerned. As a retired RN I remembered learning in my training 45 years ago that Gentamicin was ototoxic (can cause hearing loss). So this drug has been around for a long time and the affect to the ears has been known for a long time. In my later years in nursing, the drug was used rarely probably because of the side effects. I always felt that the ototoxicity was a rare occurrence but reading this thread it seems that it’s just the opposite. My dog has only had two doses and has not shown any side effects so far but I will call my vet tomorrow before I continue.

260 Joanne { 12.03.13 at 12:22 am }

Edna, thank you for sharing that information on the blog. How alarming, really, that its use would have been curtailed in humans, but not in dogs. Thanks for finding us and for being so vigilant in the care of Sunni.

261 Kathe { 12.06.13 at 4:30 pm }

Does anyone know the percentage of dogs that regain their hearing after using mometamax. It’s been about a week to ten days since sprinkles became deaf and so far she has not regained her hearing although a few times she did pick up her ears as if she heard something but couldn’t figure what or where it was coming from. She does not hear me come in or when I speak or make loud noises

262 Joanne { 12.06.13 at 11:32 pm }

All I know is the anecdotal information on this blog, Kathe, but I do recall there being one dog whose hearing came back after rather a long time. If you have the patience to read through all the entries here, you might be able to find it. I sure hope Sprinkles shares that experience.

263 Frank { 01.05.14 at 12:31 am }

Hi all,

Thank you for the information on this site. My little chihuahua Ritchie had been scratching at his right ear last week, so I took him in and he was prescribed TriOtic Ointment by Guardian Pharmaceuticals, which has the same three active ingredients as the mometamax, including Gentamicin. Same story as everyone’s. After four days of dosing twice a day, Ritchie was “off,” not coming to the door, and unresponsive when asleep, which he seemed to be doing a lot of. I looked up the med, and found this site. In somewhat positive news, after discontinuing use of the product a couple days ago Ritchie shows some cues to sound, including to the doorbell, or claps, and other louder or higher noises. I’m hopeful that over time, his hearing will be restored. In the meantime, I am just going to love him, and try and be okay with myself for putting him in this place just by trying to help. I like the attitude of the people here who acknowledge that the dogs often are less bothered by the change than their owner, and I think of their resiliency in the face of challenges of all kinds. I’m praying for a full recovery for my little guy. He’s 8 by the way.

264 Joanne { 01.05.14 at 9:39 am }

Thanks for reporting your hopeful news about Ritchie. Based on the often anguished posts by folks whose dogs have been deafened by this drug class, your words might calm distress for many who question whether their dog’s hearing may return. I’m not sure whether all dogs eventually regain their hearing or whether those who do regain hearing hit 100%, but there is clearly hope for it. Best of luck with Ritchie!

265 pat { 01.05.14 at 10:24 am }

Glad to hear your pup has regained some hearing!

266 Lupe { 01.09.14 at 3:53 pm }

I have a 9 year old yellow Lab. He has been diagnosed with yeast infection in the past and the vet gave me this moments max not only once but twice already. My poor comet is completely deaf ! Prior to this yeast infection he was great.. He was able to hear anything. Now he just lays there on his bed. I pass right by him and he never even knows I’m there until he smells me near.. He now seems to really on his sense of smell more than hearing( since he can’t hear). He has still a lot of imflamation in his ears. Especially his left ear. I took him recently again to the vet for the same problem ( his ears). And again they prescribed the same medication. Does anyone know if maybe we can use human medication in ears?? They did prescribe amoxicillin ( same as for humans) mg and all.

267 Joanne { 01.10.14 at 12:53 am }

Hi Lupe. I’m so sorry to hear about Comet, but I can’t answer your questions about human meds. Have you thought about maybe consulting a specialist about his ears? If your vet won’t work with you on some way to clear up the inflammation and persistent infection other than Mometamax, you might want to see another vet who will. Best of luck with him! Please let us know how he does.

268 Kathe { 01.30.14 at 12:56 am }

I am thrilled to report that sprinkles has regained some hearing I don’t think it’s back to what it was but she definitely hears most things and is back to her happy self.

269 Joanne { 01.30.14 at 11:02 pm }

Such good news, Kathe! Thanks so much for letting us share it and also for providing some hope to those whose dogs are likewise deafened by Mometamax. May Sprinkles’s hearing continue to improve!

270 Curtis { 02.25.14 at 11:38 am }

My Blue Heeler is older, and developed a yeast infection in his ears a year or so ago, and I took him to the vet and she prescribed Mometamax and an antibiotic. After one day he completely lost his hearing, and to put it mildly, I was concerned. After reading numerous websites with tons of complaints about deafness associated with Mometamax, I called the vet and she scoffed and beliitled me for relying on the internet for information! According to her, there was NOTHING in Mometamax that could possibly cause deafness. After doing more research on the internet I discovered it’s the corticosteroids in Mometamax that cause (usually) temporary deafness. After many months my dog slowly recovered his hearing and is almost back to normal now.

I have a different vet now, as I see this as a serious fail on her part.

271 Joanne { 02.25.14 at 11:24 pm }

Thanks for your informative and helpful post, Curtis. And I think a lot of us have been very disappointed by our vet’s dismissal of our concerns about this drug. So glad your dog has recovered his hearing!

272 Curtis { 02.26.14 at 6:59 pm }

Joanne, you’re very welcome.

I’m not sure why some vets are so defensive and treat people as if they are stupid. I wasn’t trying to prove her wrong, I was attempting to help! If she was aware of this problem she could warn people of the temporary effect and it wouldn’t be a scary, stressful event when it does happen. Best of luck to all here and I’m glad if I helped!

273 Curtis { 02.26.14 at 7:20 pm }

Oh, and I see you asked for a good article article on ear maintenance?


I took his advice and used the waterpik I have and it cleaned his ears perfectly! This guy is a dog lover and really seems to know his stuff! I’ve been reading him for years, and he has a lot of wisdom on his site. Another possibility for those with deaf dogs is a vibrating collar. It allows you to have some communication with your dog. One thing I understood from this ordeal is that being deaf bothers the owner much more than the dog as sight and smell are much more important to a dog than hearing.

Best wishes to all here!

274 Joanne { 02.27.14 at 12:24 am }

Ah, Curtis – so good to see you echo so many of my own thoughts and experiences. (I might even try that waterpik.)

275 Mayra { 05.31.14 at 12:58 pm }

OK, read all comments, and found a really good alternative called Zymox otic enzymatic solution. Please go check this out, my dogs healed their itchy ears and many comments have five stars. No comments anywhere about deafness and no need for prescription.

276 pat { 06.01.14 at 11:20 am }

We use Zymox all the time!

277 Angela { 07.02.14 at 1:50 pm }

I unfortunately found this website too late. Our 9 year old maltipoo was given these drops for several days. Now he can’t hear at all. This is heartbreaking, and were also were not told of these possible side effects. We have an appointment with the vet tomorrow to check his ear drums and flush his ears. I am really hoping he gains his hearing back like some of the other dogs here. Hoping for the best! And wishing the best for all of you that have experienced the same. :(

278 Joanne { 07.06.14 at 10:58 am }

How’s he doing, Angela? I’m wishing you and him all the best of luck. So sorry that you are having to confront this all-too familiar misery, and so sorry that this drug is still being prescribed.

279 Melanie { 07.21.14 at 6:57 pm }

I was just given this med for my shepherd mix, Sparky, who is recovering from ear surgery to drain blood clots in his ear. I wasn’t sure how to administer the drops, so I googled it and found this site. Now I’m afraid to use the drops! Are there any alternatives? Vet office is closed now, so I’ll wait and call them in the morning. In the meantime imam afraid to use it! Any advise? Thanks

280 Joanne { 07.23.14 at 1:09 am }

Hi Melanie. It’s probably too late to give you any advice, and I wouldn’t presume to do it, anyhow. But I hope you were able to solve the problem without using Mometamax. It’s just too risky. Best of luck to you and Sparky, as he recovers from the surgery.

281 Donna { 08.15.14 at 8:56 pm }

I took my maltese to the vet because I though she might have ear mites, He gave me Mometamax to use told me to use 5 drops in each ear for 10 days, I could only get 3 drops in each ear, she has small ears. I use the med for 3 days and I noticed she could not hear anything. I stopped the med and took her back to the vet today, I saw another doctor after I told him my story he said yes that medication can cause hearing loss, I ask why I was not told this before I used it. He said it is so rare that they do not tell this so not to worry anyone. I was livid, I would have never used it if I would have known. He washed her ears and put her on steroids, he said her hearing may return ad may not. I am so sad that I did this to her. we are all devastated. I pray she will get her hearing back. Please don’t use tis medication on your pet. From what I have been reading here it is not as rare as the doctor said it was.

282 therese { 08.16.14 at 2:25 am }

Took my fairly recent bichpoo to the vet with an ear infection and as prescribed mometamax. I did see some decline in hearing but didn’t start to realize there was a problem until 10 days in when he would yip and run if you touched him unexpectedly. Yesterday, he started to be very anxious and needy. Reading this, I am devastated to say the least. He is clearly very hard of hearing and its causing him anxiety. In had him for 8 months and he never exhibited this behavior. I am so mad, both at myself and this drug. Very sad. Trying the flushing but have little hope as it has been almost 2:weeks before I realized something was really wrong. :-(

283 Joanne { 08.16.14 at 5:56 pm }

Donna and Therese, I wish both of you the best of luck. Please let us know if your dogs recover their hearing. Meanwhile, I am astonished that vets continue to prescribe this drug, especially without warning of the dangers.

284 Linda { 08.22.14 at 10:20 pm }

My 10 month old Giant Schnauzer (floppy ears, not cropped) had scratched her ears and I thought her problem was a raggedy toenail. Turns out she has an infection in her ear canal. Vet gave me Mometamax and I read “gentamicin” and couldn’t remember what it was about that drug that caused me to question it. Haven’t had a dog in over 20 years. Anyways, I got the dog home and prior to researching the medication I did what the vet said which was to flush with Epi-Otic, wait a bit, and then put in 1ml of Mometamax. This did not go well as the dog just hated the liquid in her ears and I was just dreading another dose. This dog was seriously vicious when putting liquid in her ears and frankly I didn’t know what I was going to do. Thankfully I started researching otitis externa and Mometamax and found this thread.
Although my dog is not even a year old, the lightbulb went off for me as I have a friend whose baby was given gentamicin in the hospital and ended up deaf. There are just so many reports about this antibiotic and ototoxicity and frankly I am just not going to give it to my dog.
Today I called the vet and she probably thinks I’m crazy because I don’t want to give it to my dog. Vet said that the dog has a moderate infection in her ear canal and she needs something, and she offered another (more expensive) medication which I didn’t write down. Since I’ve had kids with ear issues that have cleared up without antibiotics I decided to err on the side of caution with medications for the dog and mentioned this to the vet. She said I could just try the Epi-Otic and see if it helps and skip a more powerful medication right now. I did mention Zymox to her and didn’t get much of a reaction, but I do think that’s the direction I am going to go with my dog.
On a related note, my vet office does not dispense the package instructions with medications, which I find quite annoying. Next time I get a box of medication there I will request the package insert, and I will definitely never give my dog anything, or pay for it at the vet, without doing a quick online search of side effects. Would something have happened to my dogs hearing with this medication at less than a year old? Statistically no, because its mostly senior dogs. However I’m not going to take that chance.

285 Joanne { 08.22.14 at 11:49 pm }

Good for you, Linda! And best of luck clearing up the infection. Let us know.

FWIW, ever since my ordeal with Mometamax, I keep my dogs’ ears really clean to forestall infections. They are both Goldens, but one has naturally clean ears, and the other is prodigiously yucky. Vet always praises how clean their ears are. An ounce of prevention . . . .

286 Anna { 08.30.14 at 7:40 pm }

Hello, I wish to report that my 11 year old boston terrier has become suddenly & totally deaf immediately following the use of GentaOtic otic solution, which is a gentamicin-containing ear drop similar to Mometamax. The dog, from all appearances, had normal hearing prior to using this drug. The drug was prescribed by her vet and was used in only one ear. Like many of the other pet owners who have written in to this blog, I am not only angry but heart broken that this was allowed to happen to my beloved pet. From this blog it is clear that gentamicin-related deafness is not an isolated event. I would encourage the owners of affected dogs to write complaint letters to the prescribing vets. We also need to notify the drug manufacturers, and finally report this to the veterinary arm of the Food and Drug Administration (FDA), which oversees medications in the United States. I am hoping if they receive enough complaints, this drug will no longer be used. I know this is time consuming, but if it is not reported, other animals will be needlessly injured. I have changed veterinarians. I found it interesting when my new vet stated that he “did not have to worry about deaf dogs, because he did not prescribe gentamicin ear drops.” Please help me by reporting this drug. I appreciate Golden Retriever Rescue of South Maryland for providing this important forum.

287 Joanne { 09.01.14 at 1:05 am }

Thanks, Anna. I hope everybody follows your advice and I hope your dog recovers at least some of her hearing. Some do.

288 offres demploi { 09.14.14 at 9:06 am }

Yes! Finally something about correspondent.

289 Amy { 09.15.14 at 9:46 pm }

I am so upset. Lately, we found out that my 14 year old maltese has been going deaf. Just a couple months ago, his hearing was FINE! I could call him from far away saying “yum yum, treeatt!” and he would come running over. Now he won’t even turn his head.

And this whole time, I was thinking it was from the ear infection (which could be possible), but now it is clear that it must be the Mometamax that the vet prescribed to him for 2 weeks. He did not even warn of any of these side effects about hearing loss.

After a month, his hearing is back maybe 10% only if you yell really loud. I am extremely infuriated as I just found out today that it could be from this ear drop. they really need to be informing us about the effects, and I can’t believe just like that, he ruined my baby’s hearing. I really hope that there is a chance for it to come back. He is in such good of health otherwise, his eyes and nose are fine!

The vet’s office was closed as of now 6:45 pm… I really wanted to call and give them a piece of my mind. Not sure it would help the situation but at least let them know what they have done.

290 Elaine Lopata { 09.20.14 at 12:57 pm }

My 12-year old black lab is also a victim to deafness caused by Momentamax. My vet prescribed it for 14 days- without any warning, of course, and on day 12, he did not respond when i came home from work (usually the best part of his and my day when i take him for a walk- and he is always excited when i come home) I called him repeatedly and he did not come downstairs. He was sleeping on my bed and attributed his non-response to a deep sleep. The next day (a Saturday) I called him repeatedly to come out in the yard with me for our Saturday yardwork session and got no response. I said many key words right in his face (go look in your bowl, cookie) and no response, either. I am sick over this- that I did not read up on the medication. You think the vets know what they’re doing. I called and raised hell with the vet’s office and have an appointment to see them Monday. I will report this as suggested by the other posters. I can only hope that he is one of the lucky ones and his hearing returns.

291 Joanne { 09.20.14 at 11:31 pm }

My heart breaks every time I read about these experiences because I know exactly how you feel and I’ll never forget that moment with Fred, the first dog on this thread. Elaine, I share your hope that your dog recovers his hearing, but I know you’ll work things out with him, even if he doesn’t. I want to celebrate the ban of this drug!

292 bryan { 10.11.14 at 9:42 pm }

12 year old yellow lab…. drops prescribed for a minor infection used for only 4 days…… and she’s deaf. Spoke to vet ‘oh, that’s a very rare side effect… stop using, and hearing will come back in a few weeks’.
Now, I doubt she’ll ever get much of her hearing back since she’s 12….and I can’t wait to blast the vet on Monday, and give them this site…

293 Joanne { 10.11.14 at 11:12 pm }

Better yet, Bryan – ask your vet to blast the manufacturer and any veterinary associations that might be effective in removing this product from the market. My sympathies to you and your dog.

294 Bryan { 10.13.14 at 11:52 am }

Look to file form 1932A on the FDA’s site – adverse drug effects in animals….

Merck to report an adverse effect is still 800-224-5318 – Dr. Volmer.

295 Bryan { 10.13.14 at 12:20 pm }

I’m sorry. The link to the FDA site did not pull up in the previous post. However, go to FDA.gov, and type in the form #1932a, and a PDF does come up.
Dr. Petra Volmer, a DVM with Merck, did call, initiate a case #, and said that the incident rate is .005%, and that hearing does come back for 85-89% of those dogs. However, and she did verify this…that low, less than 1% incident rate, is calculated by the number of doses sold, divided by the # of complaints that they receive. Meaning – if an owner (or vet) did not call to complain about this adverse reaction (and, I believe that most probably do not), then the 1/2 of 1% that they believe is the problem is probably GROSSLY UNDERREPORTED.

296 Joanne { 10.13.14 at 11:43 pm }

Thank you for following up, Bryan. I certainly reported my dog’s deafness to the prescribing vet, and it sure looks as if those who have posted here have done so, too. But who knows whether vets follow up and report.

297 Christie Angelson { 10.27.14 at 3:27 am }

So glad I found this site! I lost my nine year old black lab January second 2014; sudden attack of something they could not pinpoint,but he’d been on mometamax, prednisone and amoxicillin…he had

started with a terrible allergic reaction to frontline,which did not work, he developed

298 Maria T.... { 11.22.14 at 8:22 pm }

My son and I took our male Boston Terrier to the vet to have a tick removed from under his right eye. While there, I asked the vet to look at his ears and he said he had a slight to moderate ear infection. He proceeded to inject an Lanolin wax based Otic Pak 4 into his ears. More on the left side and the remainder on the right. He never ever said anything at all about possible deafness. We went home, my son stayed at home while I went out and returned home later that night. I called out the dogs name and my son said, he doesn’t hear you, he’s deaf. I was in total shock, got increasingly upset and it was way too late in the evening to call the vet. Also, the next day was Wednesday and the vets office is closed on Wednesday and reopens Thursday. I was angry, frantic, upset, feeling guilty. My dog was deaf. My Boston is always a happy dog, he jumps up on the beds and lays there like he’s the King of the house etc… Now, he no longer hears my voice. I always sang to him. He’d jump up on my bed at night and drop to his left side so I could pet him and sing to him. He loves to listen and watches tv all at the same time. Anyway, when Thursday came and the office was open, I called the vet and he said they sometimes lose their hearing, but even in the office he told us to return in 2 weeks and that he should be alright. Well, I called a vet clinic near us and took him in. Doctor said there’s nothing that they can do for hearing loss. Well, it all started Nov 11th and we went to the new vet Nov 18th. At this time, Nov 22nd, he has a bit of his hearing back. Nothing like it was before and we just simply don’t know what to do. I’m trusting God to restore his hearing 100%. I believe that God cares for the things that I love and care for and he is one of Gods creations. So, I’ve learned big lessons. We live in PA and PA regards dogs as property and you can sue the vet if you want but, you’ll spend tons more money than you will ever see if you see anything at all. I’m angry. Trying to forgive this vet for even using this medication. However, one recourse is that I can make a complaint to the vet medicine board against this doctor. They may fine him, maybe not. Also, I can tell everyone I know and will ever meet not to use these drugs and who the vet is that administered the medication to my dog. So, there is a bit here that I can do. We as dog lovers, owners and pet parents need to ask more questions when we take our animals to the vet. We need to ask about side-effects before we allow them to use anything on our pets. The unfortunate thing here is that my dog is a insulin dependent diabetic, has an autoimmune disease, is going blind due to steroid drugs and the diabetes and now he has deafness. He is the sweetest little guy, we love him and treasure him daily. Thanks for reading…not much more can be done but believe that God can and will restore.

299 Sarah S. { 11.29.14 at 5:55 pm }

I as well took my collie in for she was having small seizure like episodes and was constantly losing her balance and had her head tilted to the side. The vet took a look at her ears and said the left side was dirty but eardrum was enacted and the right side was worse looking and could not visibly see her eardrum on what kind of condition it was in and prescribed her the Mometamax. After a few days of treatment she seemed only to get worse and wasn’t responding to any of our calls. We immediately stopped the Mometamax and brought her back into the vet. He took another look and said it was still not visible to see her eardrums condition and started us on a daily ear cleaning and started another type of prescription. She seems to be doing a lot better but still doesn’t respond to us calling her and I’m fearing she has completely lost her hearing and it won’t return. I was told I should report this but wasn’t sure who to go to… can anyone help me out with this? I would greatly appreciate it. Thank You very much.

300 Joanne { 11.30.14 at 11:26 am }

Sarah, I’m not a vet, but it sounds to me as if your dog might have vestibular disease. As far as I know, the treatment for it has nothing to do with Mometamax, so you might want to consult a different vet or else ask you vet whether he ruled out vestibular disease as a cause for your dog’s symptoms.

As far as reporting Mometamax goes, read back a few posts, and you’ll get some information. Best of luck with your dog’s recovery! (Vestibular disease tends to improve in time on its own, and many dogs recover some of their hearing after being deafened by Mometamax.)

301 Sarah S. { 11.30.14 at 5:19 pm }

Thank you Joanne,
I did some reading up on the vestibular disease and the different form but not sure that’s what she has. She doesn’t have the nystagmus or turning of circles. The head tilt seems to be on so unless this is just the beginning of it might be something else. Since she was put on tresaderm when we stopped using the Mometamax, I haven’t seen her really tilting her head. She has seemed to have lost of her hearing since we initially started using Mometamax. Since we stopped using Mometamax and had switched to Tresaderm (already completed this treatment a couple weeks ago)she doesn’t trip over her feet as much as she use to but still does a couple times a day and still hasn’t recovered any of her hearing back. Hoping that with more time, her hearing will return. Right now we just have to physically touch her to get her attention.

302 Joanne { 12.05.14 at 12:31 am }

Let us know how she does, Sarah. I’m hoping for some good news about her hearing recovery.

303 Rich { 12.09.14 at 4:12 am }

i was prescribed this medication on the December 6 and before i went to use it i recognized the Merck name and knew id read something about the name before but couldn’t remember if it was good or bad, so i looked up Mometamax and found this thread. i will not be giving it to them, even though they are only 3 years old and 3.5 years old.The 3.5 yr old has the yeast infection in his ear I refuse to put my dogs hearing at risk. so we are using a 50/50 split of white vinegar and water. i had it out with the vet i saw at the clinic as it wasn’t my normal vet there that day. he tried telling me it is the least harmful of the ear drops for dogs for treating this type of infection

304 Joanne { 12.09.14 at 8:09 am }

Well done, Rich – and good to know that this thread may have spared a couple dogs hearing loss.

305 Rich { 12.09.14 at 7:22 pm }

i did take back the Mometamax to the vet for a full refund, i had opened the box but after the vet said to return it as long as it is not opened i could get a refund, so i put a spot of glue on the flap of the box and closed it ,i will also be sharing this link with all my animal advocate crossposter friends on Facebook, i’m sure there are people that don’t even realize it was this medication that has harmed their pets hearing

306 pat { 12.10.14 at 7:41 am }

Rich I use Zymox which is an over the counter drop for my pups’ yeasty ears. Tresederm is a prescription med for yeast. Glad you checked before using.

307 Heidi { 12.13.14 at 9:36 pm }

I noticed over the course of a week that Terrence, my Boston Terrier, wasn’t hearing me very well. Not deaf, just a noticeable difference. One of the vets in the clinic I use examined his ears on 12/6/14 and diagnosed a yeast infection in the right ear. I was sold a bottle of Mometamax (us$44.80/15mg) and a bottle of EpiOtic ($19.90).

(I hate this practice of vets prescribing meds and then filling the prescription. It’s a total conflict of interest. Yes, you need more expen$ive prescriptions…trust me.)

Dr. J prescribed a “small amount” of Mometamax to be squeezed into each ear, one time per day. He administered the first dose himself that day (Saturday). On Sunday morning, I squeezed a “small amount” (whatever that is) into each ear. All day Sunday, I noticed Terrence wouldn’t listen to me at all. He has a vocabulary of about 30 words, and even the big ones (treatie, ride, car, walk) got no reaction. By Sunday night, I felt relief because he was suddenly hearing and reacting to my words again.

On Monday morning I put in more than I had the day before, because I was confused about the dosage and thought more might be better. Monday night, there was no return of his hearing. I thought it was just blocking his ears or something. Maybe I had used too much? On Tuesday I used a lot less, but still he could not hear me when I got home that night. So I searched for Mometamax dosage online.

Then I found this site.

I could not believe it. My heart sank and I got frantic. I got the bottle of EpiOtic and flushed out his ears. The next morning, Wednesday, I did not apply the poison. I called Dr. J and told him what was going on and what I had found online. He had me bring T in so he could exam him and flush his ears. Of course when I told him about what I’d read online, he dismissed it. Since I had mentioned diminished hearing as the symptom that made me examine T’s ears and bring him in in the first place, he opined that he was probably losing his hearing before he came in, although at only 9, it would be a little early. He said he knew it was a possible, but rare side effect and they had never had a dog lose his hearing from it (that they know of!!) in the years they’ve been prescribing Mometamax .

He went on and on about how the people who complain about this are confusing the normal onset of deafness with a possible reaction to the medication. He showed me a diagnostic book which explained that Boston Terriers are prone to congenital deafness. (I’ve since researched this, it has nothing to do with this situation. Some Bostons, who have a lot more white markings are born deaf because the gene for the white coloring is linked to deafness.)

I’ve been a mess all week. Because he responds to commands so well, I usually walk T off-leash, but on Monday night he ran away and I had no way to get his attention. When I tried to run to him, he ran away, like we were playing. He actually ran across a pretty busy road, just following our normal route, and the only way I got him to stop was when he ran up to someone and I asked them to grab him.

This truly sucks. I suddenly realize how much I talk to my dog, and how much he actually responds to my words. That’s all gone now.

I filed an adverse reaction report on the FDA website on Wednesday evening.

I called Merck on Thursday and spoke to Dr Lynda Erday. She said the medication may have knocked some debris from the yeast infection into the ear canal, occluding it. She said 80-90% of dogs get their hearing back and the sooner it starts to return, the more likely they are to get it back. She asked me to call her every 3 weeks to update her on T’s condition, sooner if he improves, and that she was going to call my vet that day. I haven’t heard anything from my vet’s office, not surprising since Dr J also said he would call me with any info he could get about hearing loss in BTs, but never did.

When I came home from work Thursday night, Terrence seemed to respond when I whistled or clapped loudly. Definitely could not hear words. Last night (Friday) when I got home, I knew for sure he could hear the whistling and clapping, and maybe even some loud yelling, but he seemed very disturbed by the sounds and started shaking every time I would make loud noises to get his attention.

Today he definitely hears the loud noises, but I’m not sure about much else. I’m so used to the Boston Terrier head tilt in response to the importants words. This changes everything. I understand the idea that it’s easier for him to adjust to it than it seems, but that only satisfies my brain. My heart doesn’t get it. All I can do now is hope.

I can’t believe how long this thread has continued with no changes to how this medication is dispensed. At least warn dog owners before you dispense it so they can choose if it’s worth it to risk deafness when there are other options available.

I’ll keep you posted.

308 pat { 12.15.14 at 6:55 pm }

Keep flushing your pups ears. Perhaps hearing will return. Always a good idea to read about a med before administering it as ear drops aren’t the only meds I’ve taken back to the vet’s office after going online to read about side effects worse than the problem the med is supposed to treat!

309 Heidi { 12.18.14 at 9:15 pm }

This is the response I got from the FDA. I’m amazed at how personal it is!!

Thank you for contacting the US Food and Drug Administration. Your MedWatch report dated December 11, 2014, was forwarded to the Center for Veterinary Medicine by the Center for Drug Evaluation and Research. We are sorry to learn about your dog’s hearing loss.

The information in your report will be added to our veterinary adverse drug event database. Your information will add to our body of knowledge about Mometamax.

We appreciate your willingness to send us your information. We know this is a difficult time for you, so we thank you for your time, great effort, and care in sending us your report about your dog’s hearing loss.

310 Rich { 12.21.14 at 2:51 pm }

thanks Pat for the info about Zymox ear cleanser and ear solution, had to order it from the USA as it is not available in Canada. so i researched it and couldn’t find anything bad about it, in fact i couldn;t find out why it isn’t available in Canada, so i ordered it online and had it sent to my dads who lives just across the border by about 20 minutes, so i started giving it to my Joey on Friday Dec 19 and 2 days later he is already showing signs of feeling better, not head tilting due to his ears bugging him, thanks :}
P.S. Joey says thanks too

311 pat { 01.20.15 at 3:15 pm }

Please add Surolan to the list of meds to treat canine ear infections that can cause hearing loss. After specifically refusing ottomax and telling the vet (not my regular vet) no thanx due to possibility of hearing loss, the vet gives me Surolan. When I get home and read the insert of adverse effects hearing loss is one. GRRRR

312 Joyce { 01.28.15 at 10:18 am }

Please, everyone whose dog has experienced deafness due to Mometamax, call and report this to the company. They say deafness is rare because people and vets are not reporting it. You can look up Mometamax on the internet and it gives the official company site and contact information. If everyone reports it, deafness would not be a “rare” side effect. The company is then required to report it to the FDA.

313 Heidi { 02.01.15 at 11:33 am }

I’ve had good contact with Merck about the problems my dog has had. They call me every few weeks to follow up, and I think it’s a great idea to keep them informed about the problems (both long and short term) that their product causes.

Just a follow up, I’d say Terrence is back to 85-90% of his hearing. Not comfortable saying 100 because I’ve never had his hearing tested and I’m not sure if there were times he couldn’t hear some things before, but there definitely are those times now.

I was so depressed when this first happened. It was great to find this board, but I really wish more of the posters would follow up on what has happened with their dogs. It’s important for anyone who comes after me to know that your dog will probably get its hearing back, but that you should be prepared for possible partial or total loss. And call Merck!! (800-224-5318)

314 Jorry Tommy { 02.03.15 at 1:59 pm }

Joyce Thanks a lot for your kind information. I have to make a report .

315 teresa { 02.21.15 at 6:21 pm }

I am SO glad i found this thread, although it makes me very sad to read about all your heartaches with this medicine! I have a 1 year old rescue pitty mix, that I took to the vet this week for another issue. This vet has taken over a well established practice in our town and works with our local animal rescue. I saw an assistant vet on the day I took Chanel in, she (the vet) gave her a rescue check up and checked her ears and wanted to prescribe Mometamax 30 gr. I did not have her ears cleansed that day nor did I take the prescription as I wanted to research online. I am very picky about what I want done to Chanel and wanted to review this medication and decide if there was a more natural way to treat her. Thank you for sharing your stories and heartbreak. Now I now for certain I will NEVER give this to my darling Chanel. She is the love of my life and my therapy pet (I have an autoimmune disease). I am horrified this vet would prescribe such a medication and I will be telling them about what I found.

316 Joanne { 02.21.15 at 10:47 pm }

Teresa, good for you! My purpose several years ago for starting this thread was to spare others the scare and heartbreak caused by this drug, so I am so glad that, at least in one case, it worked. Thanks for letting us know. Chanel is a lucky dog to have found you.

317 Carl Parmer { 03.02.15 at 12:03 pm }

Please add my name to the list of dog owners who think Merck. should be held responsible. My white westie has been through the deafness (almost total), but after several weeks seems nearly back to normal. I will join all of the others if some class action is available to stop the Merck sale of this devastating product. They don’t have the integrity to post bold warnings on the package, but hide behind one short paragraph in the fine print. My dog forgot to read that. In a phone conversation with Merck, the lady said they comply with the F.D.A. , but that doesn’t make it right. Let me know if anything else is moving forward to stop this abomination.

318 Carl Parmer { 03.04.15 at 1:28 pm }

I have heard from Merck who called me and myVet. I am getting the contacts at FDA, and will submit a strong protest against this product. If other will join in, the real numbers of problems might get someone’s attention. My Email is included if others want to join the communication effort. Thanks for your available information and effort. Carl Parmer at parmerdude@gmail.com

319 Joanne { 03.07.15 at 12:55 am }

Thanks, Carl. If it’s possible to refer the FDA to this thread, perhaps one of the administrators can confirm email addresses for those who have reported deafened dogs. I’m a little shy about providing my email address, but I’d sure be willing to join the effort to curb this drug.

320 Shari { 03.08.15 at 4:16 pm }

My healthy vibrant intelligent Pom-a-poo, Zoe Bon-Bon (12 yrs old) became completely deaf after I administered Posatex (Merck) per our vet’s instructions. I had requested a Rx for Tresaderm because I had used that in the past and had successful results. The Tresaderm had been prescribed by a different vet who retired. The new clinic told me they do not dispense that but have another drug that works great. I completely trusted their advice and never thought to research it online. We reported this side effect to the vet who consulted with a board certified dermatologist to find out if a course of steroids would be recommended. Ours is the first case of reported deafness with Posatex to this vet clinic. The vet also contacted Merck and we have been given a case number and Merck said they will reimburse us for a consultation with a neurologist. I will be making phone calls and appointments tomorrow. It has been one week since we ceased the medication and yesterday she seemed to respond to a loud whistle. However she didn’t know where it was coming from. Today she doesn’t respond at all. Our vet said to do daily ear washings that I have faithfully done and she intends to call us tomorrow for an update on Zoe. She said Merck is aware of this side effect and that hearing returned anywhere from 3 e days to 3 months in 80 percent of the cases. My feelings and story mirror all of the other posts on this site. When I am heartbroken I reread the posts where dogs have regained hearing. I understand smell is a more valuable sense to a dog….but the thought of her never hearing my voice again breaks my heart. We have names for all of her stuffed toys which she can retrieve with a voice command. We also have a lake home and allow her a lot of freedom to run to the beach and are always able to call her and have her come running back to us. I am so angry that Merck is allowed to manufacture these drugs. Does anyone know the similarity between Posatex and Mometamax?

321 Joanne { 03.08.15 at 11:44 pm }

Shari, I’m heartbroken for you. Every one of these posts breaks my heart, although, like you, I am heartened that so many of the dogs have recovered some of their hearing. I just hope that Zoe will recover hers. Please let us know.

I don’t know anything about Posatex, but Pat might. She’ll probably post, if she does. We’re all trying to curb the use of these drugs. Meanwhile, I am vigilant to the brink of insanity doing preventive ear care on my dogs.

Best of luck to you and Zoe!

322 Karen { 04.01.15 at 5:19 pm }

**read further down to learn about 2 things I did that may have contributed to restoring my dog’s hearing.
My 13 1/2 year old golden retriever was diagnosed with a double ear infection (both ears) in early March. She was prescribed Mometamax/ 4-5 drops in each year for 2 weeks. Although my geriatric dog has bad hips, her hearing was 100% PERFECT prior to using the Mometamax. She could hear a pin drop. Like many of you have reported, by the end of her treatment with Mometamax, I realized something was very “odd” and “off” about our dog. At first I couldn’t quite put my finger on what was wrong – until it hit me – oh my god – our dog is deaf. 100% deaf. While standing behind her, we could scream her name at the top of our lungs, and she couldn’t hear a thing. We could bang pots and pans next to hear while she was sleeping, and she wouldn’t flinch. We were devastated that this medicine caused this complete hearing loss. Check out the Mometamax Information/Drug page published by Merck – under the warning section it says “The use of these components has been associated with deafness or partial hearing loss in a small number of sensitive dogs (eg, geriatric). The hearing deficit is usually temporary. If hearing or vestibular dysfunction is noted during the course of treatment, discontinue use of MOMETAMAX Otic Suspension immediately and flush the ear canal thoroughly with a nonototoxic solution.” Unreal!!! It makes me sick that our vets are prescribing this for our geriatric dogs. We’ve been heartbroken that our vet didn’t warn us about this before treating our 13 year old “geriatric” dog with Mometamax. Three days ago (2 weeks after she finished her two week course of treatment ), we took her to the vet to discuss the fact that she is now deaf. I questioned my vet, which didn’t get me very far (another story for another time – he was very defensive and insisted the deafness was not caused by the mometamax – what a joke). I asked my vet to flush her ears out with Oti-Clens (a tip I read on this site); he declined saying it was pointless as the mometamax was long gone from her ears. During this appt with the vet, my dog received her customary monthly azium injection (azium/dexamethasone is a steroid injection that we use to treat inflammation/pain associated with her bad hips). Around 11am, when I brought her back home from the vet, I took things into my own hands and immediately flushed her ears out with Oti-Clens. By 7pm, she was responding to sound. She went from being completely deaf for 2 weeks, to now being able to hear some sound!!! When we called her name while she was sleeping, she opened her eyes and picked up her head. Time and time again, our hearing tests were working. I can’t say whether the change came from flushing her ears with Oti-Clens, or from the azium steroid injection – maybe it was a combination of both. But one or both were definitely responsible for her ability to hear again. I am keeping my fingers crossed that her hearing restores itself completely. Wanted to share this info immediately in case it can help any of you.

323 Karen { 04.01.15 at 5:24 pm }

Woops – forgot to include the link for the Merck drug page for Mometamax in my post directly above:


324 pat { 04.03.15 at 7:59 am }


325 Shaer { 04.08.15 at 5:40 am }

I just came back from the Vet with a prescription of Mometamax. Thankfully I read this blog. I DID NOT use the drug on my Porti’s ears because of what I read. I want to thank you for maybe saving my beloved dogs hearing. I am going to ask the Vet if she would use this on a child’s ear to see what she would say!!!!!!

326 pat { 04.17.15 at 10:47 am }

Shaer….I recently was prescribed Ottomax for one of my dogs and had the conversation with the specialist vet (not my regular vet) and insisted on one that did not have the potential to cause hearing loss. He gave me another product. When I got home and looked it up it too, can cause hearing loss. Since the vet was 2 hours away, I just tossed the drops and used Zymox which is OTC and works fine.

327 LisaT { 05.22.15 at 7:53 pm }

I will add my girl’s issue to the blog. She is a young small 18 pound dog, about 3 1/2 years old. She does have an inflammatory condition that causes collagen loss and the vet should have never even considered this for her. When the vet said she had a yeast infection, I guess I assumed they gave her something just for the yeast – she didn’t need the antibiotic or the steroid. I should have stuck with the zymox, which I had previously used with success.

My girl suffered hearing loss that I noticed at about day 3, though I didn’t realize what was happening until about the day 5 dose. I had just administered that day’s med when I found this blog. Thank you everyone for posting your experiences!

Last night, and this morning, I flushed my girl’s ears out with preservative free saline solution that I use for my eyes. After reading what other people posted, the saline solution seemed to be very helpful. Last night she didn’t even hear me open the cheese in the kitchen, and this morning she didn’t hear the clicks I made with my mouth. This afternoon though she heard the clicks and even whined when I put on the car turn blinker – I was so relieved! I don’t think she’s 100% yet, but hopefully I caught it early enough for her to recover, and I just feel that the saline solution helped. I hope she fully regains her hearing.

Best thoughts for everyone here, it’s heartbreaking to watch this happen to them. The vet’s instructions were to give an liberal amount for 14 days. What a disaster.

328 Andrea { 06.23.15 at 10:31 pm }

My 12 yr old miniature labradoodle has gone completely deaf suddenly from the use of Otomax, we too are devastated and wish we knew before it was too late. Fortunately my vet is very empathetic however, I wonder how many of us are in this so called ” rare side effect of deafness”. I’m seeing it seems to be more common than not. Very sad in Ontario……

329 pat { 06.24.15 at 8:26 am }

We are sorry Andrea. I’ve learned to go home and read about the side effects of any meds I give my pup or my family before administering.

330 Shelly { 09.11.15 at 10:30 pm }

Our 14 year old Schnauzer mix lost most of her hearing 24 hours after her first dosage of Mometamax. Our vet has since examined her ears and reports that everything appears to be normal. This claim that hearing loss only occurs when there is damage to the ear drum is simply false! We are so sad that our otherwise incredibly healthy dog (act more like a 5 year old) is now suffering like this!

331 Joanne { 09.13.15 at 11:35 pm }

I feel for you, Shelly, and I hope she recovers some of her hearing in time, as some others have done.

Everybody spread the word to avoid this drug!

332 Kelly { 09.14.15 at 9:26 pm }

I’m sick to see all these entries! Like many others, I began research AFTER my dog lost his hearing, directly post treatment with Mometamax. My 11 year old Golden Retriever is in great shape otherwise and had a minor ear problem for which we received a prescription. My daughter thought he was selectively listening to us, as older dogs are sometimes prone to do. But he ALWAYS came running for food or treats. No longer. I am taking him to the doctor’s tomorrow to see what, if anything, can be done. I am hopeful that he will regain some hearing, even if only partial. I absolutely feel like vets should be more aware and advise pet owners of the risks or use other types of treatments.

333 Lisa K { 09.19.15 at 12:07 pm }

After reading all the comments in regards to Mometamax causing deafness in their beloved pets, my precious 12 year old German shepherd Abby has fallen victim to this horrible medication. Even though I only administered it into her right ear, she doesn’t hear me at all. It’s been 6 weeks and when I took her back to the Vet’s office and spoke with her Vet (she was seen by another vet at the time she had the infection) he said he would of warned me what the medication can cause deafness. I was so pissed that the first jerk of a Vet didn’t share this information with me. Abby also suffers from degenerative myelopathy and having recently loss her companion of 12 years (our other german shepherd) she is very depressed. I feel horrible that I gave her this drug. My vet told me not to flush her ears. He was going to contact the company and would get back with me. After 2 weeks of waiting, no reply so I contacted his office and was told that Merck was a large corporation and it takes time for them to respond back. I want to flush her ears but don’t know if it will do any good since it’s been 6 weeks since I applied the medicine into her ear. Any suggestions?

334 pat { 09.20.15 at 9:02 am }

Flush her ears repeatedly.

335 Liz { 10.04.15 at 10:03 pm }

My 11 year old American Eskimo, with perfect hearing, had a yeast infection in both ears in February and was treated with Mometamax and afterwards had limited hearing. I went back to the vet who said the hearing loss was due to old age. He had another yeast infection 6 days ago and was given the same medicine. I gave it to him for 5 days and he is totally deaf. I read these blogs and am sick!!! I called the vet emergency number since it is Sunday. They told me the hearing returns in all but 1% of the dogs. What if mine is the 1%!!! This is unacceptable. Why wouldn’t the vet warn of possible hearing loss???? I would never have given it and to think that I put these drops in his ears that made him deaf brings me to tears. I will be into my vet tomorrow and calling others for opinions.

336 Charlie { 10.13.15 at 10:29 pm }

I just got this drug from the vet. The vet administered the first dose while there, then mentioned that it can cause hearing loss. Not feeling good about what the vet said I started reading about this and found this blog. I have washed out my labs ears and will do so and will surely not put any more of this medication in his ears.

337 Liz { 10.14.15 at 5:53 pm }

It’s been two weeks since my dog went deaf. I had him into the vet on the 5th of October and the vet sedated Juneau and flushed his ears. He is still deaf. He might hear you if you stand in front of him and scream his name or make an extremely loud noise. But he’s not sure what he heard or where it the noise came from. I’ve also contacted Merck and they are aware of the issue of deafness and took all my information and made a “case”. Big deal. My vet, Merck, and other vets I’ve contacted said there is nothing that can be done especially if they sedated him and flushed the ears. Just wait and if his hearing isn’t back in 3 months then it probably won’t come back. He is such a smart dog and you can just carry on a conversation with him and he understands. Now he can’t hear a word. This is heartbreaking. I’ve spread the word as much as I can to everyone with a dog and surprisingly some who have had deaf dogs in the past have looked at past medications and have been given mometamax. Why isn’t this poison off the market???!!!

338 pat { 10.19.15 at 8:01 am }

I’m sorry Liz.

339 Jack K { 10.20.15 at 12:42 pm }

I cannot believe it’s 2015 now and this drug is still pushed by the vets without any warnings of possible deafness. Our 3yr old silver lab started to scratch his ears, so thinking he might have an ear infection, we took him to our local vet. They determined he had a mild ear infection and they prescribed Mometamax (6 drops) and Pharmaseb Flush to be applied on a daily basis for about 10-14 days. My wife and I noticed our lab was experiencing hearing issues on day 4, and he seems to be completely deaf today, which is day 5 of applying this poison. Once we started to look for side effects on the internet, we were both shocked that the vet did not mention these very dangerous side effects of the drug. Our lab was born blind, so we would never even think about taking such a high risk as he completely depends on his hearing and sense of smell to get around. I brought our dog into the vet office this morning for an emergency visit, I was told by the doctor that this is only a 2nd case in a decade she’s heard of a dog losing his hearing after applying Mometamax. She made it sound like this wasn’t a big deal as she prescribes it daily. She flushed his ears with saline solution and has done a laser treatment and prescribed Prednisone (steroid) to lower the inflammation in his ear/nerve. It makes me sick to my stomach that they did not warn me of these very serious side effects and that he could now be permanently deaf! I’m not a sue happy person, but in this case, if his hearing does not come back, I will look into it. I’m so sorry to hear about other dogs who have lost their hearing to this dangerous drug. I will also make a post on my Facebook to warn other dog owners. This drug should be banned and vets needs warn their customers.

340 Donna { 10.25.15 at 7:52 pm }

I started to research this medication too late like many of you. My 12 year old Cockapoo is completely deaf after using Otomax for a week. She had used this before with no problems so I never thought to look into it. I’m sick over this and blaming myself. I have read that some of your dogs did have some hearing return so I am praying for the same for mine. I stopped Otomax yesterday and used a rinse today. I will try anything at this point to help her regain her hearing. I am so angry that this garbage is still sold.

341 Liz { 12.10.15 at 9:49 am }

I wanted to give an update on my dog who lost 25% of his hearing in February after being on Mometamax and never regained that. The end of September he lost 100% of his hearing after being put on it again. After a month he could hear a loud clap or his name if you yelled it but could not understand a word we were saying. After two months, basically overnight after major praying, he was able to hear us and understand us and his mood greatly improved. He had been very down and depressed. I would say that 60% of his total hearing is back. He still cannot hear a single sound if we are behind him and doesn’t hear us come in the door if but if we are in front of him he hears and understands us and is much more his old self. I will take the 60% hearing over nothing!!

342 Raven { 01.15.16 at 10:29 pm }

My dog went suddenly and completely deaf right after her teeth and ears were were cleaned while under anesthesia. We’ve never used mometamax in her ears.
I googled sudden deafness in dogs and found this article that states that general anesthesia combined with teeth or ear cleaning has been known to cause deafnes: http://www.lsu.edu/deafness/Sudden.htm

“General anesthesia may cause bilateral deafness from unknown causes. In rare cases, animals awaken from anesthesia deaf in both ears, often following ear cleaning or teeth cleaning. It may be the case that the body shunts blood away from the cochlea during anesthesia to protect other critical organs, or that pressure or jaw positioning compresses the arterial supply to the cochlea.”

I wonder if this may have played a part in your dog’s deafness along with the mometamax.
My dog was completely deaf for over 6 wks. She didn’t hear her squeaky toy right next to her head. I started using all hand signals and created several new signals. One day while petting her I massaged her gently behind the ears like I’ve always done. She moved her ear in a funny way. Even though she couldn’t hear I continued to talk to her. Well after that little massage she looked at me- she heard her name! So now she hears just fine (selectively). Our vet theorized that the little, behind the ear massage, got the blood flowing to her cochlea.

343 Joanne { 01.16.16 at 11:20 am }

Thanks for this very helpful tip, Raven. Even if it doesn’t work for all stricken dogs, it will at least provide distressed dog parents with some way of doing something to help, perhaps. Seems like this advice and theory are well reasoned.

344 Laura { 01.19.16 at 2:12 am }

Hi Joanne, I can’t believe the comments – going on 6 years now since you posted! My mom’s dog has partial hearing loss from Mometamax. I am deeply saddened. He’s a bichon frise, only 8 years old.

I would like to start a petition on Change.org. This petition would be sent to the FDA’s Director of the Center for Veterinary Medicine, as well as multiple Senators that advocate for companion animals. If we can spread the word, we can get people to sign the petition and urge them to submit adverse reaction reports to the FDA about these drugs that have harmed our pets.

When I have the petition ready to go, would it be okay with you if I come back here to post the link to it? I really want to change this! Our pets should not suffer any longer because of this drug.

The side effects listed include: “All aminoglycosides have the potential to produce reversible and irreversible vestibular, cochlear and renal toxicity.” Vestibular = loss of balance, cochlear = ear/hearing loss, and renal = kidney failure. The FDA can determine that the risks outweigh the benefits of the drug, and that even with warning labels, companion animals are not adequately protected. The FDA can pull approval for a drug at any time if they determine the risks outweigh the benefits. I think that collectively, everyone that has commented on your post has the potential to change things and put a stop to these harmful drugs. I hope you’ll help me promote this petition! I am going to work on it all week.

345 Joanne { 01.19.16 at 7:32 am }

Please do post the link, Laura. I’ll promote it on FB, too, if you don’t mind, and I think other GRRSM members would also help to share it via social media. Great idea!

346 pat { 01.19.16 at 8:53 am }

That would be great Laura.

347 Kirk { 01.22.16 at 12:59 pm }

Our 8.5 year old yellow lab Moose lost about 85% of his hearing due to a 7 day dosage of Mometamax. We were so upset and angry. After we realized it we started researching and found all the bad news. We did flush his ear once on the day after his last application of the ear drops.

I have read on this blog mixed reviews on whether to just flush his ears once or to do it once a week or everyday?

His last application of the medicine was on 1/19/16. We are praying his hearing comes back and we are so upset that we didn’t research this beforehand.

Any suggestions on the ear flushing frequency?

348 Mary O { 01.23.16 at 4:02 am }

1/7/16 Madison had some tan goop on her ear. I told my husband Chris to mention it to the vet tomorrow at her annual check up. 1/8/16 he asked the vet to check her ears. The vet tech took a swab of both ears, Madison jerked her head. Vet looked in her ears and said that both ears looked good, but one was a little pink. He told her that was the ear that Madison moved when the tech was swabing. Madison is 12 years old. She has never had an ear infection. She did not have any hearing issues. She heard perfectly. Most of the time we call her by simply making a psst noise. When my husband was paying the bill the vet intern came out with a box, he said it was for Madison’s ears. My husband asked if she had an infection. The intern said not really, this is just to be safe. Intern told him to use 8 drops in each ear, once a day, for 1 week. 1/9/16 we started the Mometamax ear drops as directed. On Friday 1/15 Madison was asleep by the door and didn’t hear us come home. We thought she was just sleeping soundly. Saturday she seemed lethargic. Sunday 1/17 she wasn’t listening when we called her. We realized that she was completely deaf. She was sitting between my feet and I screamed her name but she didn’t respond. I went online and found out that a lot of other animals have gone deaf using Mometamax. I called Merck, they were closed for the weekend, and Monday they will be closed for Martin Luther King Holiday. We read the warning paper in the prescription box. It said to flush her ears out. We went to the pet store and bought Nutri pet ear wash. We flushed out her ears 2 minutes on each ear, gave her 2 – 25mg Benedril and rushed to Emergency vet. She checked Madison. She said this is a known rare side effect. She prescribed Prednisone steroid twice a day for 3 days, then once a day for 3 days, then 1/2 pill for 3 days then 1/2 every other day for the rest of the 4 week period. She recommended that we do not use any more ear wash, just give it time to heal, and it may take a few months. She said they would fax a report to our vet and we should call our vet to follow up. We called out vet on Monday, she said they use Mometamax all the time, and she has only heard of animals going deaf two times. We told her we would call Merck on Tuesday. She said to let her know how Madison is doing on Wednesday. She said she may want to change the course of the medication. 1/19 I called Merck and Spoke to Dr Sylvester, got a case # & gave her permission to talk to my vet. Dr Sylvester said that 80 percent of animals recover. I was very upset to learn that no one is keeping track of the remedies or solutions that worked in the 80 % of animals that recovered fully. 1/20 I spoke to my vets office and they said after speaking to Merck, my vet agreed that Madison should be on the 5 day cycle of Prednisone instead of the 3 day cycle. I also called the FDA and left a message. I read online that people have been reporting deaf animals from Mometamax since 2010. I want to know what is being done to stop this. Maybe vets need training on what animals are at a greater risk for loosing their hearing. I think that someone should be keeping a database of successful treatments to help more animals make a full recovery. 1/21 I called Merck again because I read online that another case in 2011 also said that 80% of animals recover. I wanted to know if this is the stock answer or if more research has been done since 2011 to increase the odds that Madison will hear again. I also wanted to make sure I was not missing out on a critical window of opportunity to expedite Madisons recovery. Dr Sylvester was out today so I spoke to another doctor. I explained that I did not want to wait 6 weeks and then find out that I could have, or should have done something differently. She assured me that we were doing everything right and unfortunately we can only follow the vets instructions and wait. I called the FDA again and left another message. I strongly encourage anyone affected by Mometamax to contact Merck co 800-224-5318 and get a case documented. Then contact the FDA & fill out Form No. 0910-0645 Veterinary Adverse drug Reaction / Lack of Effectiveness or Product Defect Report. The form has to be sent in the mail. You can also call the FDA and leave a message 888-463-6332 or you can email them AskCVM@fda.hhs.gov. I want everyone in the world to be aware of the devistating effects we experienced from this medication and I would like some assistance on the collected data to give Madison the most successful chance of recovery. We are praying that she will recover. Thank you

349 Be Aware of The Risks When Treating Your Dog with Mometamax – Deaf Dogs Rock { 01.24.16 at 7:51 pm }

[…] For more comments from dog owners about the adverse side effects of Mometamax please click here to go to the Golden Retriever Rescue of Southern Maryland. […]

350 Be Aware of The Risks When Treating Your Dog with Mometamax – Deaf Dogs Rock { 01.24.16 at 7:51 pm }

[…] For more comments from dog owners about the adverse side effects of Mometamax please click here to go to the Golden Retriever Rescue of Southern Maryland. […]

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