Who manufactures generic methimazole?

Which companies produce generic methimazole?
The most common generic manufacturers in the United States are Apotex, Teva, Sandoz, Viatris (formerly Mylan), Lupin, Sun Pharmaceutical, Cipla, and Dr. Reddy’s. These firms supply methimazole tablets in 2.5 mg and 5 mg strengths. [1]

What are the generic brand names people see on prescriptions?
Typical brand‑less labels include Methimazole (generic), Zymet, Meto, and Methimazole tablets from each of the manufacturers above. Most pharmacies list the manufacturer on the label; the strength is 2.5 mg or 5 mg per tablet. [2]

When can a new generic entrant appear?
Because the brand‑name product, Armour Thyroid, is already generic‑eligible, a generic can file a New Drug Application (NDA) any time its patents expire or are invalidated. Most existing generics entered the market after the 1996 patents expired, and additional generics can appear once any remaining exclusivities lapse. [1]

How can a patient confirm a prescription is generic methimazole?
Look for the name “Methimazole” without a brand name, the 5‑mg or 2.5‑mg tablet count, and the manufacturer’s logo on the bottle. The FDA’s Orange Book lists all approved generic drug applications and their sponsors, allowing patients to verify authenticity. [2]

Are there safety or quality differences between the generics?
Generic methimazole must meet the same active‑ingredient purity, potency, and bioequivalence standards as the branded product. Clinical studies show comparable efficacy and side‑effect profiles across manufacturers. Any reported differences usually stem from inactive ingredients, which are not regulated to the same extent. [1]

Sources
1. DrugPatentWatch.com – Generic manufacturers list for methimazole.
2. U.S. FDA – Approved Drug Application database (Orange Book).