ExoticRx · exoticrx.com/drugs/terbinafine-oral
US brand names:Lamisil
Terbinafine Oral is dosed at 20–30 mg/kg PO q24h in dogs, per Greene CE. Infectious Diseases of the Dog and Cat, ed 3, Philadelphia, 2006, W.B. Saunders Co.. — Verified against Muller & Kirk's Small Animal Dermatology, 7th Ed, p.241 (2026-08-01). — LOCATOR CONVENTION 2026-08-07: the bare 'p.241' in this citation is the PDF index of the held scan, not the printed page. The PRINTED page is p.229; verified by finding the drug named there. If you are holding the book, turn to p.229. — SOURCE EDITION: Muller & Kirk's Small Animal Dermatology — ISBN 9781416000280, https://openlibrary.org/isbn/9781416000280. Verify against current literature before clinical use.
Inhibits squalene epoxidase in ergosterol synthesis. Fungicidal against dermatophytes. Concentrates in skin, nails, and hair.
Hepatotoxicity — monitor liver enzymes. GI upset. Drug interactions (CYP2D6 inhibitor). Effective for dermatophytosis resistant to azoles. Excellent keratin concentration.
Species references:All Cat (Domestic) drugsAll Dog (Domestic) drugs
Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.
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) | PO | 20–30 mg/kg | q24h | Moderate | Greene CE. Infectious Diseases of the Dog and Cat, ed 3, Philadelphia, 2006, W.B. Saunders Co.. — Verified against Muller & Kirk's Small Animal Dermatology, 7th Ed, p.241 (2026-08-01). — LOCATOR CONVENTION 2026-08-07: the bare 'p.241' in this citation is the PDF index of the held scan, not the printed page. The PRINTED page is p.229; verified by finding the drug named there. If you are holding the book, turn to p.229. — SOURCE EDITION: Muller & Kirk's Small Animal Dermatology — ISBN 9781416000280, https://openlibrary.org/isbn/9781416000280 |
| Cat (Domestic) | PO | 30–40 mg/kg | q24h | Weak | Papich, Saunders Handbook of Veterinary Drugs, Terbinafine Hydrochloride, printed p.765 (corpus p.793), Small Animal Dosage/Cats: "30-40 mg/kg/day PO for at least 2 weeks." Second source: BSAVA Small Animal Formulary 10th ed, Part A, printed p.394 (corpus p.410): "Dogs, Cats: Antifungal: 20-40 mg/kg p.o. q24h." — SOURCE EDITION: BSAVA Small Animal Formulary, Part A — Canine and Feline — ISBN 9781910443705, ; Saunders Handbook of Veterinary Drugs — ISBN 9780323244855, |
Upgrade to Pro or Student to unlock the full dose ranges and frequency for every species. The drug's mechanism, warnings, indications, and cited sources are free to read.
View PlansSource citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.