Source-based antithyroid medicine information. No clinical reviewer is claimed yet; see our editorial policy.
Block and replace (carbimazole plus levothyroxine) and titration (carbimazole alone, adjusted) compared, with relapse rates, side effects, who each suits, and why block and replace is avoided in pregnancy.
Which blood tests you need on carbimazole or methimazole and when, what TSH, free T4, T3 and TRAb results mean, and when a blood count is urgent.
Neo-Mercazole by country (UK, Ireland, France, Australia, New Zealand, India, Pakistan, Egypt, Bangladesh), its generic name, other carbimazole brands, methimazole names such as Tapazole, Thyrozol and Mercazole, and common misspellings.
Carbimazole (Neo-Mercazole) and methimazole compared, with a dose conversion table, which countries use which, and what to do when you move abroad or your pharmacy only stocks the other one.
How hyperthyroidism shows up in older cats, how vets confirm it, and how methimazole, carbimazole (Vidalta), radioiodine, surgery and iodine-restricted food compare.
Carbimazole for hyperthyroid cats as Vidalta 10 mg and 15 mg prolonged-release tablets, with label doses, the blood test schedule, side effects and how it differs from methimazole.
Methimazole (thiamazole) for hyperthyroid cats, from Felimazole tablets and Thyronorm oral solution to transdermal ear gel, with label doses, blood test schedule and side effects.
How Neo-Mercazole (carbimazole) compares with methimazole (thiamazole) and propylthiouracil (PTU), and how antithyroid tablets compare with radioactive iodine and thyroid surgery.
Neo-Mercazole (carbimazole) doses for adults and children, titration versus block and replace, how long treatment lasts, missed doses, blood tests and switching from PTU or methimazole.
Graves' disease is the commonest cause of an overactive thyroid. What triggers it, how it is diagnosed, how antithyroid tablets such as Neo-Mercazole, radioiodine and surgery compare, and what predicts remission.
