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MERCK Posatex Otic Suspension

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IB# 107167
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Veterinary Diet Item

MERCK Posatex Otic Suspension
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MERCK Posatex Otic Suspension is indicated for the treatment of otitis externa (inflammation in the ear canal) in dogs associated with susceptible strains of yeast and bacteria.


Posatex Otic Suspension is an antibacterial, anti-inflammatory and antifungal medication.

Active Ingredients

orbifloxacin, mometasone, posaconazole

Side Effects

Possible side effects may include skin irritation and redness. Talk to your veterinarian about any side effect that seems unusual or bothersome to your pet.


Posatex Otic Suspension should be applied as directed by your veterinarian. Clean and dry affected area prior to use. Gently place the applicator tip partially into your pet’s ear. Gently squeeze the prescribed amount of medicine (usually in drops) into the ear canal. A few drops of medication can also be applied to the outer ear if instructed by your veterinarian. Wipe off the applicator tip with a tissue. Gently massage the ear. Shake well before use.


Posatex Otic Suspension is contraindicated in dogs with known or suspected hypersensitivity to quinolones, mometasone furoate monohydrate, or posaconazole. Do not use in dogs with known tympanic perforation. Do not administer orally. Immediately discontinue use of Posatex Otic Suspension if hearing loss is observed during treatment. The safety of this medication has not been evaluated in pregnant, breeding, or nursing animals. Avoid prolonged or repeated use of Posatex Otic Suspension. Long-term use of topical otic corticosteroids has been associated with adrenocortical suppression and iatrogenic hyperadrenocorticism in dogs. The systemic administration of quinolones has been shown to produce cartilage erosions of weight bearing joints and other signs of arthropathy in immature animals of various species.

Make sure to tell your veterinarian what other medication you are giving to your pet. Quite often your veterinarian may prescribe two different medications, and a drug interaction may be anticipated. In this case, your veterinarian may vary the dose and/or monitor your pet more closely. Contact your veterinarian if your pet experiences any unusual reactions when different medications are given together. Store this medicine in a cool, dry place at room temperature. Store away from heat and direct sunlight. Do not store this medicine in the bathroom, near the kitchen sink or in damp places. The medicine may break down if exposed to heat or moisture.

Allergic reactions to medications may occur. Be sure to inform VetSource and your veterinarian if your pet has any known drug sensitivities or allergies. If your pet displays symptoms of an allergic reaction, call your veterinarian immediately or go to a veterinary emergency clinic. Symptoms may include but are not limited to: swollen lips, tongue, face, airways; difficulty breathing; agitation; profuse salivation; vomiting; widespread hives and itching.


IB# 107167
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