Vidalta tablets for cats

What Vidalta is used for

Vidalta contains carbimazole, which is converted in the body to thiamazole (methimazole), reducing excess thyroid hormone production. It is licensed for the treatment of hyperthyroidism and hyperthyroidism-associated clinical signs in cats. It controls, but does not cure, the underlying disease — stopping treatment leads to hormone levels returning within about 48 hours unless the cat has had thyroidectomy or radioiodine treatment.

Available strengths

10mg and 15mg prolonged-release tablets, packs of 30.

How it’s given

Given orally, once daily, at a consistent time. Do not crush or break the tablets. Your vet sets and adjusts the dose using blood tests — never stop or change treatment without veterinary advice.

Safety information

• Not for use in cats with severe primary liver disease, diabetes mellitus, autoimmune disease or abnormal blood cell counts, platelet disorders or clotting problems, or hypersensitivity to carbimazole/thiamazole
• Must not be used in pregnant or lactating cats
• Regular blood tests (thyroid hormone, kidney and liver function, blood cell counts) are required before and during treatment
• Possible effects include vomiting, reduced appetite, lethargy, weight loss or skin irritation; rarely, blood or liver changes — contact your vet if you notice anything unusual

Handling advice for owners

Wash your hands after handling tablets or a treated cat’s litter. Do not handle this medicine if you are allergic to antithyroid medicines. Women of child-bearing age and pregnant women should wear gloves when handling litter or vomit from a treated cat.

Full prescribing information is in the product datasheet. Manufactured by MSD Animal Health.

Useful links

• Cat Medication
• Pet Prescription Help Centre