ExoticRx · exoticrx.com/drugs/carbimazole
US brand names:Neo-Mercazole, Vidalta
Carbimazole is dosed at 2.5–5 mg per cat PO q8-12h (IR) or q24h (SR) in cats, per JFMS 2016; Plumb's Veterinary Drug Handbook. Verify against current literature before clinical use.
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 references:All Cat (Domestic) drugs
Each ExoticRx dose rule is graded by the strength of its primary evidence — see the editorial process.
A dog/cat sample is shown here. Cited dosing for all 1 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 | 2.5–5 mg per cat | q8-12h (IR) or q24h (SR) | Strong | JFMS 2016; Plumb's Veterinary Drug Handbook |
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View PlansSource citations and evidence levels available on the live page. Reference only — verify against current literature before clinical use.