Pocket Pet · Oryctolagus cuniculus · typical adult weight 1.00–5.00 kg
Methimazole is dosed at 1.4 mg/kg PO q24h in rabbits, per DiGeronimo PM, Brandao J. Update on thyroid disease in rabbits and guinea pigs. In: Wyre NR, Chen S, eds. Vet Clin North Am Exot Anim Pract: New and Emerging Diseases: an Update; 2020;23:373-381. — Mined from Carpenter's Exotic Animal Formulary, 6th Ed, p.879 (2026-08-01, PENDING REVIEW) doi:10.1016/j.cvex.2020.01.007. Methimazole is used in rabbits for Hyperthyroidism. Routes documented in rabbits: PO. A typical adult rabbit weighs 1.00–5.00 kg. ExoticRx lists 1 cited dose rule for Methimazole in rabbits, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Tapazole, Felimazole
| Route | Dose | Frequency | Indication | Evidence | Source |
|---|---|---|---|---|---|
| PO | 1.4 mg/kg | q24h | Hyperthyroidism | Moderate | DiGeronimo PM, Brandao J. Update on thyroid disease in rabbits and guinea pigs. In: Wyre NR, Chen S, eds. Vet Clin North Am Exot Anim Pract: New and Emerging Diseases: an Update; 2020;23:373-381. — Mined from Carpenter's Exotic Animal Formulary, 6th Ed, p.879 (2026-08-01, PENDING REVIEW) doi:10.1016/j.cvex.2020.01.007 |
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These ranges are per kg. Enter your rabbit's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Inhibits thyroid peroxidase, blocking iodine organification and thyroid hormone synthesis. Does not destroy thyroid tissue.
Cats: monitor renal function (treating hyperthyroidism may unmask underlying renal disease). Side effects include anorexia, vomiting, facial pruritus, and blood dyscrasias. Monitor CBC and liver enzymes.
Species-specific contraindications and adverse-reaction reports for rabbits may differ from canine / feline reference data — consult the primary citations listed with each rule.
Methimazole dose range in rabbits, with cited source references: PO 1.4 mg/kg q24h. Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Methimazole in rabbits: PO.
Methimazole is indicated in rabbits for: Hyperthyroidism.
These are general warnings for Methimazole across species; consult the rabbit dosing table above for species-specific guidance. Cats: monitor renal function (treating hyperthyroidism may unmask underlying renal disease). Side effects include anorexia, vomiting, facial pruritus, and blood dyscrasias. Monitor CBC and liver enzymes.
Why a species-specific page? Methimazole pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in rabbits — 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.