Mometamax: Bacterial Targets and Therapeutic Benefits
Mometamax Otic Suspension is a veterinary prescription medication formulated to treat otitis externa in dogs, a condition often caused by bacterial and yeast infections in the external ear canal. This article details the bacterial strains Mometamax is effective against, its active ingredients, therapeutic use, and safety considerations for pet owners.
Key Bacteria Mometamax Targets
Mometamax is designed to combat several common and opportunistic pathogens found in canine ear infections. The bacterial strains treated by Mometamax include:
- Pseudomonas spp. (especially Pseudomonas aeruginosa)
- Coagulase-positive staphylococci
- Enterococcus faecalis
- Proteus mirabilis
- Beta-hemolytic streptococci
Its broad-spectrum action also extends to yeast infections caused by Malassezia pachydermatis, which often accompany bacterial otitis externa.
Active Ingredients and Their Function
Mometamax derives its efficacy from a triple-combination formula:
- Gentamicin Sulfate: An aminoglycoside antibiotic that inhibits bacterial protein synthesis, effective against Gram-negative and some Gram-positive bacteria.
- Mometasone Furoate Monohydrate: A synthetic corticosteroid that reduces inflammation, redness, and swelling associated with infections.
- Clotrimazole: A potent antifungal that disrupts fungal cell membranes, particularly effective against common canine yeast.
Each gram of the suspension contains 3 mg of gentamicin base, 1 mg of mometasone furoate, and 10 mg of clotrimazole in a mineral oil-based hydrocarbon gel system.
Dosing and Administration
The typical course of treatment spans seven days and involves once-daily application. The dosage varies by dog weight:
- Dogs under 30 lbs: 4 drops per ear (7.5 g, 15 g, and 30 g bottles)
- Dogs 30 lbs or more: 8 drops per ear (7.5 g, 15 g, and 30 g bottles)
- For 215 g bottles, fewer drops are used: 2 or 4 drops depending on weight
Owners should clean and dry the ear canal thoroughly before administering and gently massage the ear after instillation to ensure proper distribution.
Effectiveness and Clinical Benefits
Studies show Mometamax rapidly alleviates symptoms, such as:
- Redness (erythema)
- Swelling
- Exudate discharge
- Odor reduction
- Itching and discomfort
It is as effective as other combination medications like Otomax in treating both bacteria- and yeast-associated otitis externa.
Safety Considerations and Side Effects
Mometamax should not be used in pets with:
- Perforated ear drums
- Known hypersensitivity to its ingredients
- Pregnancy (not labeled for use)
- Prolonged infections beyond 7 days
Possible side effects include:
- Temporary hearing loss or deafness
- Skin irritation or redness
- Allergic reactions
- Gastrointestinal issues like vomiting or diarrhea
Reactions are rare, occurring in less than 2% of cases, and hearing loss is typically reversible when treatment is ceased. If severe adverse effects are noted, contact a veterinarian immediately and consider flushing the ear.
Storage and Usage Guidelines
- Store between 36°F and 77°F (2°C and 25°C)
- Dispose after 28 days of first opening
- Shake well before use and avoid contamination of the dropper
Precautions and Additional Uses
While formulated for dogs, some veterinarians may prescribe Mometamax for superficial skin infections or off-label use in cats. However, caution and proper veterinary guidance are essential.
Another formulation, Mometamax Single, combines gentamicin, posaconazole, and mometasone in a one-dose treatment administered exclusively under veterinary supervision.
Conclusion
Mometamax Otic Suspension offers a reliable and comprehensive solution for canine ear infections caused by a wide range of bacteria and yeast. Its triple-action formula provides rapid relief, minimizes inflammation, and restores ear health—with minimal side effects when used correctly. Always follow veterinary instructions to ensure safe and effective treatment.
