How long has rybelsus been on the market?

When did Rybelsus (semaglutide) first launch in the US?

Rybelsus was approved by the U.S. FDA for oral use on September 2019. [1]
That puts it on the market from late 2019 onward.

How long ago was that from today?

From September 2019 to June 2026 is about 6 years and 9 months.

How can launch timing differ by country?

Market start dates can differ between regions because approval and rollout schedules vary by regulator and local payer systems. The most common “time on the market” figure is based on the first major approval/launch date in a key market (such as the FDA in the US). [1]

Sources:
[1] https://www.fda.gov/drugs/drug-approvals-and-databases/drug-trials-snapshot-rybelsus-semaglutide-oral-tablets