What is Terbinafine Topical used for?

Terbinafine Topical is indicated for: Localized dermatophytosis.

Which species have cited Terbinafine Topical dosing data?

Terbinafine Topical dosing in the ExoticRx formulary covers 2 species: Cat (Domestic), Dog (Domestic).

Is Terbinafine Topical a controlled substance?

Terbinafine Topical is not federally scheduled in the US. Controlled-drug status differs by country — verify your local rules.

Terbinafine Topical

US brand names:Lamisil Topical

Calculate dosage

Sourced from published veterinary references. Awaiting credentialed clinical reviewer — our editorial process.

Drug Class

Dermatologic

Routes

Topical

Indications

Localized dermatophytosis

Mechanism of Action

Inhibits squalene epoxidase, blocking ergosterol biosynthesis in fungal cell membranes. Fungicidal against dermatophytes at therapeutic concentrations.

Side effects & warnings

For localized dermatophytosis. Systemic therapy preferred for widespread infections. May cause local irritation. Low systemic absorption from intact skin.

Species with Terbinafine Topical dosing data (2 dose rules)

Cat (Domestic)Dog (Domestic)

Species references:All Cat (Domestic) drugs All Dog (Domestic) drugs

Evidence levels across 2 dose rules

Moderate×2

Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.

Backed by a published source

· Gupta AK, et al: Antifungal agents: An overview: Part I. J Am Acad Dermatol 30:677, 1994. doi:10.1016/s0190-9622(08)81495-8 — Verified against Muller & Kirk's Small Animal Dermatology, 7th Ed, p.238 (2026-08-01). — LOCATOR CONVENTION 2026-08-07: the bare 'p.238' in this citation is the PDF index of the held scan, not the printed page. The PRINTED page is p.226; verified by finding the drug named there. If you are holding the book, turn to p.226. — SOURCE EDITION: Muller & Kirk's Small Animal Dermatology — ISBN 9781416000280, https://openlibrary.org/isbn/9781416000280

Sample dosing (2 of 2 cited rules)

A dog/cat sample is shown here. Cited dosing for all 2 species — reptiles, birds, pocket pets, livestock, and equine — is free on the per-species pages above. Pro adds the weight-based calculator for every species.

Species	Route	Dose	Frequency	Evidence	Source
Dog (Domestic)	Topical	Systemic terbinafine preferred for widespread infection	Apply to affected area q12h-q24h	Moderate	Gupta AK, et al: Antifungal agents: An overview: Part I. J Am Acad Dermatol 30:677, 1994. doi:10.1016/s0190-9622(08)81495-8 — Verified against Muller & Kirk's Small Animal Dermatology, 7th Ed, p.238 (2026-08-01). — LOCATOR CONVENTION 2026-08-07: the bare 'p.238' in this citation is the PDF index of the held scan, not the printed page. The PRINTED page is p.226; verified by finding the drug named there. If you are holding the book, turn to p.226. — SOURCE EDITION: Muller & Kirk's Small Animal Dermatology — ISBN 9781416000280, https://openlibrary.org/isbn/9781416000280
Cat (Domestic)	Topical	See the cited source for the printed regimen	Apply to affected area q12h-q24h

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