Cat · Felis catus · typical adult weight 2.50–7.00 kg
Carbimazole is dosed at 2.5–5 mg per cat PO q8-12h then q12h maintenance (immediate-release) in cats, per JFMS 2016; Plumb's Veterinary Drug Handbook — corpus p.212 (plumb), located 2026-08-05 by exact figure+drug match (unique, drug within 70 chars). — LOCATOR CONVENTION 2026-08-07: the bare 'p.212' in this citation is the PDF index of the held scan, not the printed page. The PRINTED page is p.185; verified by finding the drug named there. If you are holding the book, turn to p.185. — SOURCE EDITION: Plumb's Veterinary Drug Handbook — ISBN 9781394172207, https://openlibrary.org/isbn/9781394172207. Carbimazole is used in cats for Feline hyperthyroidism. Routes documented in cats: PO. A typical adult cat weighs 2.50–7.00 kg. ExoticRx lists 1 cited dose rule for Carbimazole in cats, drawn from published veterinary references. Verify against current literature before clinical use.
US trade names: Neo-Mercazole, Vidalta
| Route | Dose | Frequency | Duration | Indication | Evidence | Source |
|---|---|---|---|---|---|---|
| PO | 2.5–5 mg per catmax 15 mg total | q8-12h then q12h maintenance (immediate-release) | Long-term or pre-treatment before I-131/surgery | Feline hyperthyroidism | Strong | JFMS 2016; Plumb's Veterinary Drug Handbook — corpus p.212 (plumb), located 2026-08-05 by exact figure+drug match (unique, drug within 70 chars). — LOCATOR CONVENTION 2026-08-07: the bare 'p.212' in this citation is the PDF index of the held scan, not the printed page. The PRINTED page is p.185; verified by finding the drug named there. If you are holding the book, turn to p.185. — 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/animal) | Route | Source | As printed |
|---|---|---|---|
| 5 | PO | Papich Saunders Handbook of Veterinary Drugs, 4th edp.136 | • 5 mg per cat q8h (induction), followed by 5 mg/cat q12h PO. In Europe, |
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.
Need the exact dose for your patient?
Enter your cat's weight to check these cited ranges in the calculator — 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 cats may differ from canine / feline reference data — consult the primary citations listed with each rule.
Carbimazole dose range in cats, with cited source references: PO 2.5–5 mg per cat q8-12h then q12h maintenance (immediate-release). Reference ranges from cited sources — verify against current literature before clinical use.
Documented routes for Carbimazole in cats: PO.
Cited course lengths for Carbimazole in cats include: Long-term or pre-treatment before I-131/surgery. Duration depends on the indication — match it to the specific dose rule in the table above.
Carbimazole is indicated in cats for: Feline hyperthyroidism.
These are general warnings for Carbimazole across species; consult the cat dosing table above for species-specific guidance. Similar side effects as methimazole. Monitor CBC (agranulocytosis risk), liver enzymes, renal function. Better GI tolerance than methimazole in some cats.
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 cats — 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.