How Fast Does Mometamax Work for Treating Dog Ear Infections?
Mometamax Otic Suspension is a powerful, prescription-only ear medication designed for treating otitis externa—a common type of external ear infection in dogs. This medication combines an antibiotic, antifungal, and a corticosteroid to deliver rapid relief from the discomfort and symptoms associated with bacterial and fungal infections of the outer ear canal.
How Quickly Does Mometamax Start Working?
One of the main concerns dog owners have when beginning treatment with Mometamax is the timeframe for symptom relief. According to clinical data and veterinary guidelines, many dogs begin experiencing noticeable improvement—such as reduced redness, swelling, discharge, and irritation—within 2 to 3 days of starting treatment. However, a complete resolution of symptoms typically requires administering the full 7-day course as prescribed.
What Infections Does Mometamax Treat?
Mometamax is effective against a range of pathogens responsible for canine ear infections, including:
- Yeast (Malassezia pachydermatis)
- Bacteria such as Pseudomonas spp., Staphylococcus, Enterococcus faecalis, Proteus mirabilis, and beta-hemolytic streptococci
This broad-spectrum coverage contributes to its fast-acting and reliable symptom relief.
Key Ingredients and Their Functions
Mometamax’s efficacy lies in its triple-action formula:
- Gentamicin sulfate: An antibiotic targeting Gram-positive and Gram-negative bacteria
- Mometasone furoate: A corticosteroid that reduces inflammation and itching
- Clotrimazole: An antifungal agent effective against yeast
This combination addresses both the infection and the accompanying inflammation, making it a comprehensive treatment option.
How to Administer Mometamax
The drug comes in bottles of varying sizes and the dosage depends on your dog's weight:
- For bottles sized 7.5 g, 15 g, or 30 g:
- Dogs under 30 lbs: 4 drops per ear
- Dogs 30 lbs or more: 8 drops per ear
- For 215 g bottles:
- Dogs under 30 lbs: 2 drops per ear
- Dogs 30 lbs or more: 4 drops per ear
Before application, ensure the ear canal is thoroughly cleaned and dried. Shake the bottle well and apply the suggested dosage into the ear canal. Gently massage the base of the ear to evenly distribute the medication.
Treatment Duration
Mometamax is usually administered once daily for seven days. Completing the full course is crucial—even if the symptoms appear to improve early—because stopping too soon may lead to recurrence or antimicrobial resistance.
When to Expect Noticeable Results
Though relief typically begins within 2–3 days, full recovery usually takes the entire treatment course. By the end of the 7-day period, most dogs exhibit significant or complete relief from discomfort, inflammation, and infection signs.
Safety and Contraindications
While Mometamax is generally safe for most dogs, it should not be used in the following cases:
- Dogs with a ruptured eardrum (tympanic membrane)
- Known hypersensitivity to any of its ingredients
- Pregnant or nursing dogs
- For treatment beyond 7 days unless advised by a vet
Possible Side Effects
The medication is well tolerated, with less than 2% of dogs experiencing adverse effects. Possible side effects include:
- Ear irritation or redness
- Temporary hearing loss, especially in older dogs
- Gastrointestinal symptoms like vomiting or diarrhea
- Allergic reactions
If you observe severe or worsening symptoms, such as increased ear pain, continued redness, or systemic signs like vomiting and lethargy, consult your veterinarian immediately.
Proper Storage and Use
Mometamax should be stored between 36°F and 77°F and used within 28 days of opening. Avoid contact with the eyes, mouth, or ingesting the medication.
A One-Dose Alternative
A newer formulation, Mometamax Single, offers single-dose, in-clinic treatment for appropriate cases, but Mometamax Otic Suspension remains the preferred long-term treatment for many veterinarians.
Conclusion
If your dog is suffering from an external ear infection, Mometamax can provide rapid and effective relief within a few days. Following the full 7-day course ensures a comprehensive recovery and reduces the risk of recurrence. Always consult your veterinarian to determine the appropriate dosage and treatment plan for your pet.





