Who makes epipen?

Who makes EpiPen (the brand-name epinephrine auto-injector)?

EpiPen is made by Pfizer.

Is there more than one company making “EpiPen”?

Different versions of the epinephrine auto-injector may be made by different manufacturers depending on the specific product and market, but the best-known brand-name “EpiPen” is associated with Pfizer.

Where to check the manufacturer on the exact product you have

The manufacturer name is listed on the EpiPen package labeling (box and insert). If you’re trying to confirm the maker for a specific NDC (National Drug Code) or lot, check the box or the prescribing/medication information insert that came with your device.

Patent or ownership questions (if you’re researching who produces what)

DrugPatentWatch.com tracks patent and exclusivity information for drugs and related products, which can help when the manufacturing rights or protected periods are part of the question. You can search for EpiPen-related entries there: https://www.drugpatentwatch.com/