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Otomax (Gentamicin / Betamethasone / Clotrimazole) Otic Ointment for Dogs

$30.99 $33.06 Save $2.07

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Prescription Required

Merck Animal Health SKU: 191271 Barcode: 300610387028

Size: 7.5 g tube

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Effective Otitis Externa Treatment for Dogs

Product Description

Otomax is a veterinary prescription otic ointment formulated for dogs with acute or chronic otitis externa linked to yeast and bacteria. It combines antibacterial, antifungal, and anti-inflammatory action to reduce redness, swelling, discharge, odor, and discomfort. Designed for seven-day therapy, it supports targeted treatment of infections associated with Malassezia pachydermatis and gentamicin-susceptible bacteria. (Source: Description; Pharmacology; Indications; Dosage and Administration)

Benefits

  • Triple Action Formula: Combines antibacterial, antifungal, and anti-inflammatory ingredients to address infection and inflammation simultaneously.
  • Broad Antimicrobial Coverage: Active against common ear pathogens, including Staphylococcus, Pseudomonas, Proteus, Escherichia coli, and Malassezia pachydermatis.
  • Reduces Ear Discomfort: Helps relieve redness, swelling, exudate, odor, and irritation associated with otitis externa.
  • Seven-Day Therapy: Designed for twice daily administration over seven consecutive days for effective management.

Variants

Otomax (Gentamicin / Betamethasone / Clotrimazole) Otic Ointment for Dogs is available in the following sizes:

  • 7.5 g tube
  • 15 g tube
  • 30 g bottle
  • 215 g bottle

Ingredients

Composition Table

Ingredient

Quantity per Gram

Gentamicin sulfate

equivalent to 3 mg gentamicin base

Betamethasone valerate

equivalent to 1 mg betamethasone

Clotrimazole

10 mg

Other Ingredients:

It is made from mineral oil and a soft, gel like hydrocarbon base.

How to Use

Recommended-Dosage Chart

Dog Weight

Bottle Size

Drops Per Ear

Frequency

Duration

Less than 30 lbs

7.5 g, 15 g tube, 15 g or 30 g bottle

4 drops

Twice daily

7 consecutive days

Less than 30 lbs

215 g bottle

2 drops

Twice daily

7 consecutive days

30 lbs or more

7.5 g, 15 g tube, 15 g or 30 g bottle

8 drops

Twice daily

7 consecutive days

30 lbs or more

215 g bottle

4 drops

Twice daily

7 consecutive days

Dosage & Administration Instructions

  • Clean Ear Canal: Thoroughly clean and dry the external ear before administering the medication.
  • Remove Debris: Clear foreign material, crusted exudates, and excess hair prior to treatment.
  • Check Eardrum: Verify the tympanic membrane is intact before instilling the ointment.
  • Massage Gently: Massage the external ear canal carefully after instillation for proper distribution.
  • Seven-Day Course: Continue therapy for seven consecutive days as directed by the manufacturer.
  • Prescription Only: By federal law, this drug can only be used by a licensed veterinarian or with their approval.

Disclaimer: This dosage information is provided by the manufacturer. Always consult your veterinarian before administering or adjusting any supplement for your pet.

Additional Information

Precautions

  • Confirm Infection Type: Make sure to identify the organism causing the infection through a smear test or culture before starting treatment.
  • Test Susceptibility: Determine antibiotic susceptibility of pathogenic organisms prior to use.
  • Avoid Prolonged Use: Administration beyond seven days may result in delayed wound healing.
  • Monitor Steroid Effects: Observe for signs of adrenocorticoid overdosage, including fluid retention and increased thirst.
  • Avoid Ingestion: Prevent oral ingestion as systemic reactions may occur with corticosteroids.
  • Avoid Ruptured Eardrum: Do not use in dogs with known perforation of the eardrums.

Possible Side Effects

  • Hearing Changes: Temporary deafness or partial hearing loss has occurred in sensitive dogs.
  • Vestibular Toxicity: Aminoglycosides may produce reversible or irreversible vestibular toxicity.
  • Renal Toxicity: Prolonged topical aminoglycoside use may cause renal toxicity, especially with renal insufficiency.
  • Steroid Reactions: Weight loss, increased thirst, and increased urination have been reported.
  • Gastrointestinal Signs: Vomiting and occasionally bloody diarrhea have been observed in dogs.
  • Cushing’s Syndrome: Prolonged or repeated steroid therapy has been associated with Cushing’s syndrome.

Storage Information

  • Temperature Range: Store between 2°C and 25°C for proper product stability.
  • Shake Bottles Well: Shake well before use when using 215 g, 30 g, or 15 g bottles.
  • Keep Away Children: Keep this and all drugs out of the reach of children.

Shipping & Return

We offer ground, express, priority, and international delivery; see our shipping policy for details.

For return instructions or product concerns, please refer to our detailed refund policy

Prescription items are NON-RETURNABLE and NON-REFUNDABLE. 

Frequently Asked Questions

Q1: What is Otomax used for in dogs?

Ans: Otomax is used to treat both short-term and long-lasting cases of otitis externa in dogs, especially when the infection involves yeast-like Malassezia pachydermatis or bacteria that respond to gentamicin. It works by targeting bacteria and fungi while also reducing inflammation, helping to clear the infection and soothe irritated, inflamed ears.

Q2: How long should Otomax be used in dogs?

Ans: Apply Otomax twice daily for seven consecutive days, making sure to follow the manufacturer’s directions. Add the recommended number of drops into your dog’s ear according to their weight and the instructions on the packaging. After applying the drops, gently massage the outer ear canal to help distribute the medication evenly.

Q3: Can Otomax cause hearing problems in dogs?

Ans: The use of Otomax has been associated with temporary deafness or partial hearing loss in a small number of sensitive dogs, especially geriatric patients. If hearing or vestibular dysfunction occurs, treatment should be discontinued and the ear canal flushed thoroughly.

Q4: Can Otomax be used if my dog’s eardrum is ruptured?

Ans: Otomax should not be used in dogs with known perforation of the eardrums. Before instilling the medication, the external ear canal should be examined thoroughly to ensure the tympanic membrane is intact to avoid potential complications.

Q5: Is Otomax a prescription medication?

Ans: Yes, Otomax is a prescription medication for animals. By federal law, it can only be used by a licensed veterinarian or with their approval. It is made specifically for treating dogs’ ears and should be used only under a veterinarian’s supervision.

Clinical Research

https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=d387b7de-0dee-49d8-b66a-73aabbda9959

https://animaldrugsatfda.fda.gov/adafda/app/search/public/document/downloadFoi/1006