Antifungals Dogs & Cats

Terbinafine for dogs and cats

Treats skin fungal infections such as ringworm, and sometimes deeper fungal infections. [1]

Last reviewed: October 2026 · 2 sources · see sources

Quick answerTerbinafine is a prescription medicine for dogs and cats. It stops fungi from making a key part of their cell membranes. The most common side effects: vomiting, low appetite, diarrhea, panting and raised liver values.

Key facts

Generic nameTerbinafine
Common brand namesLamisil
Used inDogs & Cats
TypeAntifungals
Prescription?Prescription
Typical US priceNot listed (no reliable public source)

What it's used for

Treats skin fungal infections such as ringworm, and sometimes deeper fungal infections. [1]

How it works

It stops fungi from making a key part of their cell membranes. [1]

Side effects and cautions

Common side effects: Vomiting, low appetite, diarrhea, panting and raised liver values. Cats may have facial itch. [1]

Use with care: Not for pets with liver disease or poor kidney function, or nursing pets. [1]

Call your vet right away if your pet has trouble breathing, facial swelling, hives, collapse, or any side effect that is severe or getting worse.

About dosingDosing is your vet's call. We don't list doses because the right amount depends on your pet's weight, age, health and other medicines. Don't change a dose or stop a medicine without asking your vet, and never give a pet medicine meant for people unless your vet tells you to [2].

What it costs

We don't list a price for this one because we couldn't find a reliable public source. Ask your vet or pharmacy for a quote; prices depend on your pet's size, the dose and where you fill it.

Terbinafine FAQ

What is Terbinafine used for in dogs and cats?

Treats skin fungal infections such as ringworm, and sometimes deeper fungal infections.

What are the side effects of Terbinafine?

Vomiting, low appetite, diarrhea, panting and raised liver values. Cats may have facial itch.

Does Terbinafine need a prescription?

Yes. It needs a prescription from a veterinarian.

How much Terbinafine should I give my pet?

Only your veterinarian can tell you. The right dose depends on your pet's weight, health and other medicines, so we don't list doses. Never give a pet a medicine prescribed for a person or another animal without asking your vet.

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This page is general information for pet owners, not veterinary advice. Talk to your vet about your own pet.

Sources (2) — tap to show
  1. VCA Animal Hospitals – Terbinafine (veterinary drug handout)
  2. FDA – Frequently asked questions about animal drugs