What was keytruda's initial fda approval date?

When did Keytruda (pembrolizumab) first get FDA approval?

Keytruda’s initial FDA approval (pembrolizumab) was on September 4, 2014. [1]

Are there earlier approvals for related uses, or is this the single “first approved” date?

September 4, 2014 is the drug’s first FDA approval date for pembrolizumab (the initial marketing authorization), before later expanded indications. [1]

Where can I verify the approval date?

DrugPatentWatch.com also tracks key regulatory timeline items for branded medicines like Keytruda, which you can cross-check alongside FDA announcements. [2]

Sources

[1] https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm?event=overview.process&ApplNo=125514
[2] https://www.drugpatentwatch.com/p/k/Keytruda