ExoticRx · exoticrx.com/drugs/griseofulvin
US brand names:Fulvicin, Grisovin
Griseofulvin is dosed at 15 mg/kg PO q72h in ball pythons, per Jepson L. Snakes. Exotic Animal Medicine: A Quick Reference Guide, Saunders/Elsevier, Philadelphia, PA; 2009:315-357. — Source: Carpenter's Exotic Animal Formulary, 6th Ed, p.221 — Carpenter's Exotic Animal Formulary 6th ed, Table 4.3 (Antifungal Agents Used in Reptiles). The copy held is an ebook conversion with no printed page numbers, so the table — not the page — is the citable location. — SOURCE EDITION: Carpenter's Exotic Animal Formulary — ISBN 9780323833929, https://openlibrary.org/isbn/9780323833929. Verify against current literature before clinical use.
Inhibits fungal mitosis by disrupting mitotic spindle microtubules. Deposits in keratin precursor cells, preventing fungal invasion of new growth.
TERATOGENIC — CONTRAINDICATED in pregnant animals. Bone marrow suppression (especially cats — monitor CBC). Give with fatty food (enhances absorption). Cats: FIV-positive at higher risk of toxicity. 4-8 week course minimum.
Species references:All African Pygmy Hedgehog drugsAll Ball Python drugsAll Bearded Dragon drugsAll Blue-tongue Skink drugs
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A dog/cat sample is shown here. Cited dosing for all 11 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 |
|---|---|---|---|---|---|
| Cat (Domestic) | PO | 25–50 mg/kg | q12-24h | Moderate | Verified against Muller & Kirk's Small Animal Dermatology, 7th Ed, p.239 (2026-08-01). — LOCATOR CONVENTION 2026-08-07: the bare 'p.239' in this citation is the PDF index of the held scan, not the printed page. The PRINTED page is p.227; verified by finding the drug named there. If you are holding the book, turn to p.227. — SOURCE EDITION: Muller & Kirk's Small Animal Dermatology — ISBN 9781416000280, https://openlibrary.org/isbn/9781416000280 |
| Dog (Domestic) | PO | 25–50 mg/kg | q12-24h | Weak | Papich MG. Saunders Handbook of Veterinary Drugs: Small and Large Animal, 4th ed. (Elsevier, 2016), Griseofulvin, printed p.368 (corpus PDF p.396), Small Animal Dosage — Dogs, Microsize: '25 mg/kg q12h PO, up to a maximum dose of 50-60 mg/kg q12h'. Instructions for Use, same monograph: 'Consider 25 mg/kg q12h initially, and then increase to 50-60 mg/kg q12h for problem cases.' — SOURCE EDITION: Saunders Handbook of Veterinary Drugs — ISBN 9780323244855, |
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View PlansSource citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.