Gilotrif manufacturer?

Who makes Gilotrif (afatinib)?

Gilotrif is the brand name of afatinib. The manufacturer is Boehringer Ingelheim. [1]

Who sells it in the US vs. other countries?

Gilotrif is marketed under the same brand name (afatinib) by Boehringer Ingelheim across major markets, though local distributors can vary by country. [1]

Is there a generic or alternative manufacturer?

As afatinib, the drug may have multiple generic versions depending on local approvals and patent/exclusivity status, but the branded product “Gilotrif” itself is made/marketed by Boehringer Ingelheim. [1]

What if you mean “who makes the active ingredient”?

The branded product Gilotrif is associated with Boehringer Ingelheim as the manufacturer/holder for the marketed drug in standard labeling references. [1]

Sources:
[1] https://www.giotrif.com/hcp/about-giotrif/manufactured-by-boehringer-ingelheim