Dupixent release date?

Dupixent (dupilumab) was first approved in the U.S. on March 28, 2017, for adults with moderate-to-severe atopic dermatitis.

If you mean a different country or a different indication (e.g., asthma, chronic rhinosinusitis with nasal polyps, or pediatric use), please tell me the country and indication and I’ll look up the exact release/approval date for that context. Also note that “release date” can mean either regulatory approval date or actual market launch, which can differ by region.