What It Is:
Tresaderm is a prescription topical ear medication formulated to treat ear infections and inflammation in cats. It combines three active ingredients, thiabendazole, dexamethasone, and neomycin, to address fungal and bacterial pathogens as well as reduce swelling and pain.
🐾 What It Treats
Tresaderm is used to manage:
- Otitis externa (outer ear infection) due to bacteria or yeast
- Ear mites when secondary infection or inflammation is present
- Inflammatory conditions of the ear canal causing itching and discomfort
It is not intended for primary use against mites alone but helps clear infections and soothe inflamed skin.
🧪 Active Ingredients
- Thiabendazole (10 mg/mL) — an antifungal and antiparasitic that targets yeast and fungal organisms as well as some mites
- Dexamethasone (1 mg/mL) — a corticosteroid that reduces inflammation, itching, and pain
- Neomycin sulfate (5 mg/mL) — an antibiotic effective against many gram-negative and some gram-positive bacteria
This combination addresses multiple aspects of ear disease in a single formulation.
🐾 How to Use It
Key administration steps:
- Clean the ear canal gently with a veterinarian-recommended cleanser to remove debris
- Shake the Tresaderm bottle well
- Insert the applicator tip into the ear canal and squeeze 4 to 5 drops into the affected ear
- Gently massage the base of the ear for 30 seconds to distribute medication
- Administer twice daily (every 12 hours) for 7 to 14 days or as directed
Do not skip doses and complete the full course even if the ear appears improved.
🔍 Side Effects and Precautions
Most cats tolerate Tresaderm well, but watch for:
- Transient irritation or discomfort on application
- Systemic corticosteroid effects (e.g., increased thirst or appetite) with prolonged use
- Ototoxicity risk if used on a perforated eardrum. Do not use if tympanic membrane rupture is suspected.
Use with caution in:
- Cats with perforated eardrums (seek veterinary examination first)
- Pregnant or nursing cats, as systemic absorption of steroids may occur
- Patients with known hypersensitivity to any component
Contact your vet if signs of systemic illness or severe irritation occur.
🩺 Prognosis
With proper use:
- Bacterial and fungal infections typically resolve within 7 to 14 days
- Inflammation and itching subside rapidly, often within 48 to 72 hours
- Follow-up ear exams ensure the infection is fully cleared and the ear canal returns to normal
If signs persist, your veterinarian may recommend additional diagnostics or alternative treatments.
💡 Cat Owner Note
Tresaderm simplifies ear care by combining antifungal, antibiotic, and anti-inflammatory action in one dropper. A clean ear and consistent twice-daily dosing usually get your cat back to head-tilt-free, itch-free comfort quickly. Always have your vet check for a healthy eardrum before starting treatment.
❓ Frequently Asked Questions About Tresaderm for Cats
Can I use Tresaderm if my cat’s eardrum is ruptured?
No. Tresaderm can be ototoxic if the eardrum is perforated. Always have a vet confirm drum integrity first.
How long before I see improvement?
Most cats show decreased itching and discharge within 48 to 72 hours of starting treatment.
Can I clean my cat’s ears while using Tresaderm?
Yes. Clean gently before each dose with a recommended ear cleanser, then apply medication.
Is Tresaderm safe for kittens?
Use only under veterinary guidance. The label does not specify a minimum age, but your vet will advise based on risk and need.
What if I miss a dose?
Administer as soon as you remember, then resume the regular schedule. Do not double dose.
Can Tresaderm stain furniture or bedding?
It is unlikely, but wipe any excess from the outer ear to prevent residue transfer.