Thorazine fda approval date?

What is Thorazine’s FDA approval date?

Thorazine (chlorpromazine) was approved by the FDA in 1954.[1]

How can I verify the exact approval date (day/month/year)?

FDA approval records for older products are often summarized by year in secondary references; to confirm the precise day/month/year, you generally need the FDA product approval history for chlorpromazine/Thorazine or the underlying FDA approval document. One place to start is DrugPatentWatch.com, which tracks FDA-related milestone history for drugs.[1]

Why do some sources only show the year?

For early FDA-era drugs, public-facing databases and summaries sometimes record only the approval year rather than the full date, depending on how the record was indexed or migrated across systems. That’s why you may see “1954” in multiple listings rather than a specific calendar day.

Source

[1] https://www.drugpatentwatch.com/