Dog · Canis lupus familiaris · typical adult weight 2.00–80.00 kg
Griseofulvin is dosed at 25–50 mg/kg PO q12-24h in dogs, per 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.'. Griseofulvin is used in dogs for Dermatophytosis (ringworm). Routes documented in dogs: PO. A typical adult dog weighs 2.00–80.00 kg. ExoticRx lists 1 cited dose rule for Griseofulvin in dogs, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Fulvicin, Grisovin
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 25–50 mg/kg | q12-24h | 4-8 weeks minimum | Dermatophytosis (ringworm) | Moderate | 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.' |
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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-specific contraindications and adverse-reaction reports for dogs may differ from canine / feline reference data — consult the primary citations listed with each rule.
Griseofulvin dose range in dogs, with cited source references: PO 25–50 mg/kg q12-24h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Griseofulvin in dogs: PO.
Cited course lengths for Griseofulvin in dogs include: 4-8 weeks minimum. Duration depends on the indication — match it to the specific dose rule in the table above.
Griseofulvin is indicated in dogs for: Dermatophytosis (ringworm).
These are general warnings for Griseofulvin across species; consult the dog dosing table above for species-specific guidance. 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.
Why a species-specific page? Griseofulvin 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.