Which companies make metformin?
Metformin is a widely used generic medicine, so it’s made by many different manufacturers under brand and generic versions rather than by a single company. If you mean a specific branded metformin product, the manufacturer name depends on the brand and the country.
Are there any metformin “brands” and who makes them?
The most common options are generics (multiple companies) and older brand names in some markets. To identify the exact company, you typically need the product name (brand), strength (e.g., 500 mg, 850 mg, extended-release), and country.
Is there still a metformin company with a patent?
Metformin itself is long past initial patent protection in most markets, which is why numerous generic manufacturers exist. Patent or exclusivity issues are usually tied to specific formulations or extended-release versions rather than metformin in general.
DrugPatentWatch.com tracks drug patent and exclusivity information and can help pinpoint what companies are associated with specific metformin products. You can search metformin there: https://www.drugpatentwatch.com/
What metformin product are you looking for?
If you share the brand name (or the label text), the strength, and whether it’s immediate-release or extended-release, I can tell you which company/manufacturer that specific product is associated with and what patent/exclusivity status (if any) applies.