Pet ear antibiotic Mometamax

Most dogs with ear infections often have a combination of bacteria and/or yeast

In this post I will address some of the common questions asked about using the commonly prescribed topical ear antibiotic and antifungal product, Mometamax. Given that most dogs with ear infections often have a combination of bacteria and/or yeast, this product is one of the most versatile products available in the veterinary pharmacy and available by prescription from 1800PetMeds. The combination of ingredients not only decreases the underlying allergic reaction, but the overgrowth of various bacteria and yeast involved in the majority of canine or feline ear infections.

Although it is not labeled for use in cats, many veterinarians have prescribed this product widely to cats without any ill side effects. While it won’t kill ear mites, this product can also be used topically for yeast, local ringworm or bacterial infections. One of the biggest advantages over its nearly identical sister product Otomax, is that Mometamax can be used only once daily, thus increasing client compliance. My two favorite topical ear medicines in our pets include Mometamax and Zymox.

When used appropriately this product can be used for most common ear infections in our pets, and its long shelf life of at least a year in most cases, makes it a valuable part of the medicine cabinet in those pets with recurrent ear inflammations or infections.While Mometamax is a prescription topical antifungal and antibacterial, Zymox is a nonprescription topical which in my experience and opinion is as equally effective through a different mechanism in killing yeast and bacteria in the canine or feline ear canal. Side effects of Mometamax are rare, with the most serious being rare deafness in pets whose ear drum is not intact (this is best determined by veterinary exam of the ear canal before starting this medication), allergic reaction consisting of increased redness, discomfort and ear itching, and even more rare facial swelling.

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  1. Hi Dr.Dym

    I just pick up a cat that left behind after my neighbor moved from his house and brought her back to health. I did not have the heart of leaving her outside in our 112 degree summer. She does shake her head and scratch her ear a lot. She also breath very deeply her belly goes in and out.
    She purrs a lot but I think that she has some allergies and cannot breath freely. I took her to a travelling vet who comes to our feed store in Glendale once a week. She found her very healthy except for the ears. She used a Q-Tip it was very dirty but dry. She prescribed Mometamax because she thought that she might have mites and infection. There is no drainage or fool oder. As I am an Holistic person I will not use this med. on my cat. So should I give her some Benadryl & Zymox with HC.I don’t know how much & for how long. Thank you Doc.

  2. Dr. Michael Dym, VMD veterinarianAugust 16, 2013 at 1:24 am

    HI Nicole…. I would use the zymox otic HC twice daily for 10 days, then twice weekly after that. I prefer the antihistamine chlorphenirimine in cats at dose of 2 mg twice daily as needed. Also consider DMG immune booster and proanthozone from 1800petmeds.

  3. Dr. Dym

    Just want to say thank you for your reply.
    I do have a question. For the twice a week is it also twice a day and for how many weeks.?

    I do appreciate your help. I wish you were closer I am looking for a Holistic Vet. – I will keep in touch letting U know how she is getting along..Thx again Nicole

  4. Dr. Michael Dym, VMD veterinarianAugust 18, 2013 at 12:31 am

    Hi Nicole. Thanks for your kind complements. Twice a day for 2-3 weeks, then twice to three times weekly. Also keep in mind many homeopathic vets do offer phone consultations if none in your area.

  5. Hi Dr. Dym

    Just wanted to give you some updates on Bella the adopted cat. Bella is doing much better. The ears are staying clean but she is still shaking her head, so I am going for a 2nd. week….She is very good taking her Chlorpheniramine Maleate. She is taking 1mg twice a day….Doing much much better. Her down side is that she is very aggressive and really going after my little 8lbs cat Tiggy. I don’t know if I am going to keep her but it is very hard to find someone who would take a sick animal.The only thing she got going for her is her beauty…..I was browsing on the internet and found some Homeopathic medicines
    What do you think about “Histaminum hydrochloricum 9C”for cats.
    Could I give her that instead of the Chlorpheniramine. don’t know how many pellets. Could I put it in her mouth as it would be difficult to do under the tongue or put it in her water I have a dog & Tiggy. Actually it might help Abby the Dog as she leaks her feet all day they are getting Red & Swollen.
    Thank you for all your help, I am very pleased…

  6. Dr. Michael Dym, VMD veterinarianSeptember 4, 2013 at 9:45 pm

    Hi Nicole You are very welcome. Glad I could help. I would not use the histamine homeopathic remedy, as they dont really work well in my experience and opinion. Perhaps consider natural calming agent like be serene from 1800petmeds. Let me know if any other questions.

  7. Took our bonnie to the vet for a ear infection. Vet prescribed mometamax. With-in 4 days she was completely deaf. The vet said her ear drums were swollen so we thought that was the problem having confidence in our vet we completed the treatment. took her back for a follow-up and told the vet about her hearing loss. Our vet checked her and said everything looked ok and her hearing should return. Our bonnie is 9yrs old and has been completely blind since 4. Her hearing is vital for her. I want to strike out at someone after reading all these blogs.I know that won’t solve anything so I will just pray that she gets better. I can’t believe that with all the terrible effects this drug has caused the vets just say it is rare. It doesn’t appear to be rare and I hope people read these blogs before they endanger their pet. They will get no help from the veterinarian who prescribes this poison.

  8. Dr. Michael Dym, VMD veterinarianSeptember 15, 2013 at 11:45 pm

    Hi Herb. Sorry to hear of your pet’s reaction to this product. That is why I typically go with more natural enzymatic ear products in practice such as zymox otic from 1800petmeds.

  9. I have been reading all of these posts and am appalled. Our 13 year old german shorthair was shaking his head a lot. Even though he had never had an ear infection I took him to the vet the day before I had to go out of town. The vet’s assistant examined him, said he did not have an infection but did have a lot of wax in his ears. She opened the box of Mometamax, showed me how to give him the drops and wrote the instructions on the outside of the box (12 drops, once a day to ears for 10 days). I passed the instructions on to my husband and went out of town for the next 8 days. When I came home our dog was deaf. When I took him back to the vet he was very unconcerned about it. Basically his reaction was, oh well this does happen occasionally. We don’t warn people about it, because then they wouldn’t use the medicine. There was no insert in the box (probably because the tech took it out when she opened the box and gave him the initial drops. There is no warning on the bottle or the box regarding any possible side effects. I am extremely upset about this. Our dog was a hunting dog which he is no longer able to do because of his deafness. Ever try to call back a dog that can’t hear you??? He is also very fast, so if he gets out the door before you and takes off you can’t whisle him back. If anyone knows of any pending legal action let me know. I would definitely join in.

  10. Dr. Michael Dym, VMD veterinarianFebruary 19, 2014 at 11:22 pm

    Hopefully many of these tragic hearing loss, due resolve over time, as long no other caustic chemicals used in ears

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    browsing this web site dailly and get pleasant data from here daily.

  12. I posted back in January of 2012. My 12 year old Yorkie went deaf due to this medication. I now have a six month old Havanese who I am taking to the vet (a different one than I took my Yorkie to) because I think she has infections in both ears. I am so scared. Can anyone recommend anything?

  13. Dr. Michael Dym, VMD veterinarianJune 2, 2014 at 6:09 pm

    Try the topical medicine called Zymox otic HC from 1800petmeds which is excellent natural alternative.

  14. I am so upset after reading all these comments. My 5lbs 10 year old Maltese is now deaf after 2 days of mometamax. I am heartbroken. I feel like this is all my fault because I did not check the side effects of this medicine.
    I cannot believe such medicine is given when it has such serious side effects.

  15. Dr. Michael Dym, VMD veterinarianJuly 10, 2014 at 11:08 pm

    Fortunately Sophie, most of time the hearing loss is only transient.

  16. Thank you for your reply…
    I really hope it is only temporary, because so far, there are no improvements.
    do you know how long it takes for the hearing to come back?
    should i do any ear washes or anything like that? i m just so mad at myself for letting this happen. it drive me crazy

  17. Dr. Michael Dym, VMD veterinarianJuly 15, 2014 at 4:46 pm

    Most of time, hearing gradually returns

  18. I’m finding it really hard to believe that a DVM is recommending that people see a homeopathic vet. Homeopathy is pseudoscience and what this vet is recommending is out and out pure quackery. If you want to go to a homeopathic vet, then save your self some money and just turn on the faucet. There is no scientific basis for homeopathy. Not one homeopathic remedy has ever held up in a controlled, double blind scientific test.

    As for the Momentamax deafness. I think most people are looking at correlation and not realizing the dog already had severe problems that they just didn’t realize.

  19. Dr. Michael Dym, VMD veterinarianJuly 25, 2014 at 9:20 pm

    HI Heather. Hate to respectfully disagree with you, but I am a 23 year old presidential scholar graduate from two Ivy league schools in Cornell and Penn, as well as having 23 years clinical experience BOTH as a veterinary homeopath and traditional veterinarian. There are INDEED plenty of research available from non biased sources on homeopathy, as well as many of us with tons of clinical experience in treating rather severe pathologies with classical homeopathy. Before you put it down, try learning more about it, especially from veterinarians trained in both modalities. to learn more go to as well as as well as NO placebo here. As for the mometamax, unfortunately the risk of transient deafness IS REAL and has been seen in dogs previously healthy with good hearing, and I have seen this in my 23 years of doing this.

  20. Thank you, Dr. I felt really sad when reading Heather’s comments. Nothing was wrong with my Yorkie’s hearing before this medication. And I appreciate your alternative recommendations for my Havanese. Thank you.

  21. Heather, you obviously like to sound knowledgeable but know nothing about the subject you purport to be familiar with. I raised two children on only Homeopathics and herbs, NO medical profession at all. They were always far healthier than all the other kids… runny noses or colds, ever!!! Homeopathics are extremely powerful and effective. Please educate yourself before you do harm to others with your ignorance and pontification. It is simply a cruel and dangerous behavior.

  22. Dr. Michael Dym, VMD veterinarianJuly 26, 2014 at 6:04 am

    ODd Heather how you bring up 4 MAJOR POLITICAL ORGANAZATIONS OF VETERINARY MEDICINE, WHOSE AGENDAS ARE INFLUENCED BY MAJOR PHARMACOPIA, and NOT INDEPENDENT, unbiased studies IN the United States, the AVMA hardly is considered a well respected objective and independent authority. …. Try looking at the study done by my brilliant veterinary colleague Shelley Epstein, VMD, who has an AAHA certified VERY BUSY traditional and homeopathic veterinary hospital in Wilmington, Delaware……nanomedicine-part-2 on this idea of how homeopathic remedies work on a physics level in the patient, which is WAY deeper than the biochemical surface of the body. Again you should not put down something you know little about. I can list numerous other studies on homeopathy here, however for the blog readers who simply want to find VERY KNOWLEDGABLE practitioners of veterinary homeopathy, and read about one of the most brilliant i.e Richard Pitcairn, DVM, PHd, whose PHD is in IMMUNOLOGY….. go to and read about studies Dr Pitcairn has listed there, as well as the other two websites in my prior posting…. I am sure studies are listed there as well. I suppose these hundreds of often Ivy league trained BRILLIANT veterinarians, must have had mental health breakdowns, because as someone who also attends annual homeopathy meetings, I suppose the case conferences presented on cures with very deep pathologies must be placebo or power of prayer…..

  23. WillowMorningskyJuly 26, 2014 at 9:39 am

    Kudos, Dr. Dym!!!! Thank God for Veterinarians of your knowledge and quality. Our animal population is very fortunate to have individuals such as you and your peers. Let Heather choose her own path and we wish her well in her choices. As far as I am concerned, your above response quite adequately and thoroughly covers the issue to the point where anyone else reading these posts will be well informed enough to make their own choice. Indulging in extended conflict with those who choose paths other other than what I choose holds no productive outcome for my time spent. As long as there is clear and intelligent information countering the ignorant remarks of some, which you have so well provided, I will allow incoming readers to their own decisions and move on to other things with my time and efforts. Thank you, Dr. Dym.

  24. Dr. Michael Dym, VMD veterinarianJuly 26, 2014 at 3:31 pm

    Thanks so much Willow for your wonderful and kind compliments. I greatly appreciate it. IT has always bothered me how many out there, especially more traditionally only trained MD’s and DVM’s are so close minded on complimentary type of therapies, only believing what political organizations with other agendas want them to believe. The studies on homeopathy efficacy are out there, and as a start, blog readers can go to the websites I listed on the last posting. Also ironic that SO MANY drugs used in every day veterinary practice are NOT based on double blind placebo controlled studies, which in my opinion is so hippocritical, as that is their criticism of holistic therapies. For example the drug tramadol is used every day in veterinary practice for pain relief, yet there are NO DATA THAT SUPPORTS THIS USE?…. However clinically speaking we use so many therapies, not based on studies, but based on clinical experience and use….

  25. WillowMorningskyJuly 26, 2014 at 6:52 pm

    Russ, if you don’t want to use Homeopathics, don’t. If you just want to fight for the sake of combat, please take it elsewhere. When something works for people, it works. Double blind studies are erroneous and later mis-proven all the time. And people cheat. Trust in your inner self, Young Man. Follow your own core of integrity, experience and perception. Quit looking for truth and answers in the experience of others and the external world. If you have a need and want to learn about the efficacy of Homeopathics, try them. If you perceive beneficial results, use them again. If not, use something else. Don’t spend your life engaging in battles just for the sake of your desire to stroke your ego at the expense of someone else. You will not bring yourself an excellence of life in doing so. And you will not gain the respect of people by doing so. Learn to value your self for the person you are and conduct yourself in ways that you respect so that you know inside yourself that you have integrity. Don’t throw it out to battles with others to try to gain self- respect by winning. Be compassionate and care that other people are not trampled on by your need to win. Seek knowledge through experience and trust your own intuition. Choose your path for your own forward movement, not for what you feel is glory in proving yourself better than others. I hope you understand what I am trying to share with you.

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