Dog · Canis lupus familiaris · typical adult weight 2.00–80.00 kg
Terbinafine 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. Terbinafine is used in dogs for Dermatophytosis, Malassezia dermatitis (refractory), Localized dermatophytosis. Routes documented in dogs: PO, TOPICAL. A typical adult dog weighs 2.00–80.00 kg. ExoticRx lists 3 cited dose rules for Terbinafine in dogs, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Lamisil
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 20–30 mg/kg | q24h | 21-28 days | Dermatophytosis |
| 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 |
| PO | 30 mg/kg | q24h | 21-28 days | Malassezia dermatitis (refractory) | Weak | Vertloo LRV, Gettinger MR, Naiman JH, Haynes JS. Upper Airway Obstruction Due to Primary Laryngeal Blastomycosis in a Dog. J Am Anim Hosp Assoc. 2020;56(3):181. doi:10.5326/jaaha-ms-6984 — Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.1238 (2026-08-01). — Plumb's 10th ed (held) printed p.1211, Terbinafine monograph spanning p.1210-1212; page located 2026-08-05 from the book's own running heads, and carries this exact dose under the matching species heading. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, https://openlibrary.org/isbn/9781394172207 |
| TOPICAL | Supplement with oral for widespread infection | q12-24h | 21-28 days | Localized dermatophytosis | Moderate | Verified against Plumb's Veterinary Drug Handbook, 10th Ed, p.1468 (2026-08-01). — Plumb's 10th ed (held) printed p.1210, Terbinafine monograph spanning p.1210-1212; page located 2026-08-05 from the book's own running heads, verified to name the drug in its body text. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, https://openlibrary.org/isbn/9781394172207 |
Every held source for this drug and species, as printed. Where they differ, both are shown — the choice is yours, not ours.
| Dose (mg/kg) | Route | Source | As printed |
|---|---|---|---|
| 20–40 | PO | BSAVA Small Animal Formulary, 10th ed — Part A (Canine and Feline)p.410 | 20-40 mg/kg p.o. q24h; doses greater than 30 mg/kg may be required to reach therapeutic levels in the |
| 30 | — | BSAVA Small Animal Formulary, 10th ed — Part A (Canine and Feline)p.410 | 20-40 mg/kg p.o. q24h; doses greater than 30 mg/kg may be required to reach therapeutic levels in the skin of dogs. Cream may be used |
| 30–40 | PO | Papich Saunders Handbook of Veterinary Drugs, 4th edp.793 | • 30-40 mg/kg q24h PO (with food) for 2-3 weeks. |
Figures are transcribed from the cited page or table of each held edition and are shown for reference only. They are not dose recommendations, they do not feed the calculator, and none has been reviewed by a veterinarian.
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These ranges are per kg. Enter your dog's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Inhibits squalene epoxidase, blocking ergosterol synthesis at an earlier step than azoles. Fungicidal.
Generally well-tolerated. May cause GI upset, hepatotoxicity (rare). Monitor liver enzymes during prolonged use.
Species-specific contraindications and adverse-reaction reports for dogs may differ from canine / feline reference data — consult the primary citations listed with each rule.
Terbinafine dose ranges in dogs, with cited source references: PO 20–30 mg/kg q24h; PO 30 mg/kg q24h; TOPICAL Supplement with oral for widespread infection q12-24h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Terbinafine in dogs: PO, TOPICAL.
Cited course lengths for Terbinafine in dogs include: 21-28 days. Duration depends on the indication — match it to the specific dose rule in the table above.
Terbinafine is indicated in dogs for: Dermatophytosis, Malassezia dermatitis (refractory), Localized dermatophytosis.
These are general warnings for Terbinafine across species; consult the dog dosing table above for species-specific guidance. Generally well-tolerated. May cause GI upset, hepatotoxicity (rare). Monitor liver enzymes during prolonged use.
Why a species-specific page? Terbinafine pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in dogs — the rules above are the citations specific to this species, not generic recommendations.
Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice.