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 Simone. Im so sorry for your experience with the product. Hearing may indeed come back on stopping the medication. That time will vary. Certainly report the reaction to the local vet and/or drug company for further support

  2. Just got off the phone with Merck. It’s amazing how they try to dismiss this as simply a ‘rare’ side effect. I’ve read countless comments on dogs going deaf from using this drug. And they wouldn’t give me any info or stats as to how many dogs are affected stating it’s ‘proprietary information’. My 12 year old GSD (German Shepherd) went deaf after being on Mometamax for 10 days. His hearing was fine before using this drug. My vet prescribed it for a yeast infection in his left ear and said to use a few drops in his right as a preventative. He can’t hear out of either ear now. I was not warned of the loss of hearing side effect otherwise I would have never used it. I am very upset that he may never regain his hearing. This product should be taken off the market. If there is a class action suit I’d love to know about it as well.

  3. I agree with this totally .If we where talking people / children this would be taken off the market I to have a yellow lab who lost most of his hearing due to these stupid drops and no one ever told us of the risk.

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