Hydroxyzine fda approval date pfizer?

Short answer: Hydroxyzine was approved by the FDA in the 1950s. Pfizer isn’t the original approver—the two salt forms have different brand histories, and the company roles have changed over time.

- Hydroxyzine hydrochloride (brand Atarax) – FDA approved in 1956.
- Hydroxyzine pamoate (brand Vistaril) – approved a few years later, in the late 1950s.

Pfizer currently markets Vistaril in the U.S. (via its Wyeth lineage), while Atarax is marketed by UCB Pharma.

If you want, I can pull the exact FDA approval dates from the FDA labeling (DailyMed) for both forms.