Warning letterPosted May 5, 2026
FDA warning letter to Diamond-Herpanacine of PA, Inc.
New Drug/Misbranded
FDA posted a warning letter to Diamond-Herpanacine of PA, Inc. on May 5, 2026; the letter is dated January 22, 2026. Subject: New Drug/Misbranded. Issuing office: Human Foods Program.
On the record
- Company
- Diamond-Herpanacine of PA, Inc.
- Subject
- New Drug/Misbranded
- Issuing office
- Human Foods Program
- Letter dated
- 2026-01-22
- Posted by FDA
- 2026-05-05
- Source
- FDA warning letters ↗
CFR cited
The record cites 1 section of 21 CFR Part 201.
The full record
An account shows the violations FDA described and each CFR section it cited.
What a warning letter is
A warning letter is FDA's notice to a company that it found significant violations of federal requirements. FDA asks for a written response, normally within 15 working days. The letter is advisory: it states the agency's position and is not a final agency action.
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