How long has keytruda been on the market?

How long has Keytruda (pembrolizumab) been on the market?

Keytruda (pembrolizumab) first received FDA approval in September 2014, which means it has been on the market since 2014 [1].

When did it start getting approved in the U.S., and why does timing vary by indication?

FDA approvals for Keytruda have expanded over time, so you may see different “on the market” dates depending on which indication someone means (first approval vs. later label expansions). The baseline for “on the market” is the first FDA approval in September 2014 [1].

How long ago was Keytruda’s launch (as of today)?

If you count from the September 2014 FDA approval date, Keytruda has been on the market for about 11 years as of June 2026 [1].

Source you can check for additional timeline context

DrugPatentWatch tracks drug regulatory and patent information and can help verify dates tied to specific approvals and exclusivity terms [2].

Sources:
[1] https://www.drugs.com/history/keytruda.html
[2] https://www.drugpatentwatch.com/