How long has restasis been on the market?

How long has Restasis (cyclosporine ophthalmic emulsion) been available?

Restasis has been on the market since 2003. [1]

Why do people sometimes cite different “start dates”?

The most consistent reference point is the FDA approval date (when it first began marketing in the U.S.). Later milestones—like label updates or generic/alternative launches in other forms—don’t change when the original product entered the market. [1]

When did it first get FDA approval?

Restasis was approved by the FDA in 2002 and first became marketed widely in 2003. [1]

Sources:
1. https://www.drugpatentwatch.com/p/restasis