Cat · Felis catus · typical adult weight 2.50–7.00 kg
Carbimazole is used in cat for Feline hyperthyroidism. Routes documented in cat: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Carbimazole in cat, drawn from published veterinary references. Verify against current literature before clinical use.
Trade names: Neo-Mercazole, Vidalta
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 2.5–5 mg per cat | q8-12h (IR) or q24h (SR) | Long-term or pre-treatment before I-131/surgery | Feline hyperthyroidism | Strong | JFMS 2016; Plumb's Veterinary Drug Handbook |
Absolute dose ceiling, regardless of body weight: 15 mg total (PO).
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These ranges are per kg. Enter your cat's weight to get the precise dose and draw-up volume — unit and concentration math done for you.
Prodrug rapidly converted to methimazole, which inhibits thyroid peroxidase enzyme, blocking thyroid hormone synthesis.
Similar side effects as methimazole. Monitor CBC (agranulocytosis risk), liver enzymes, renal function. Better GI tolerance than methimazole in some cats.
Species-specific contraindications and adverse-reaction reports for cat may differ from canine / feline reference data — consult the primary citations listed with each rule.
Why a species-specific page? Carbimazole pharmacokinetics differ across species: dose ranges, intervals, and route preferences are not interchangeable. Cross-extrapolation from canine doses is unsafe in cat — 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.