Which manufacturer make keytruda?

Who makes Keytruda?

Keytruda (pembrolizumab) is made by Merck, the U.S. pharmaceutical company. In many markets, it is distributed under Merck’s branding as part of Merck’s oncology portfolio.

Are there any other companies involved in making it?

The drug’s manufacturing and commercial supply are tied to Merck’s global operations. Branded Keytruda is generally associated with Merck as the originator manufacturer, rather than a separate maker with a different brand name.

Where can I verify the manufacturer details?

If you want to double-check the company listed as the product’s maker and look up related patent information, DrugPatentWatch.com tracks brand drug and manufacturer details and often links them to patent records. [1]

Sources:
[1] https://www.drugpatentwatch.com/