Explainer
How do I check whether a peptide company got an FDA warning letter?
Short answer · as of 2026-10-05
Search FDA's warning letters table by company name. Read both the letter issue date and the posted date, open the letter itself, and check whether a response or close-out letter is posted. A company that does not appear may be listed under a different legal name, or the letter may not be posted yet. A missing result is not proof of a clean record.
By Peptide Industry Gossip · Published · General explanation, not legal or medical advice. Disclaimer.
Search the table
- Open FDA's Warning Letters page and type the company name into the search box.
- Try the legal name too. Letters are posted under the legal entity, for example Lovega LLC dba Pink Pony Peptides and Prime Vitality dba Prime Peptides.
- Use the table's filters, such as year, to narrow a long list.
Read the two dates
The table lists a letter issue date and a posted date. FDA posts a letter after it is issued. In our index the gap ran from seven days (Dec. 10, 2024 letters posted Dec. 17; Mar. 31, 2026 letters posted Apr. 7) to eleven (the Pinnacle letter dated Dec. 12, 2025 was posted Dec. 23). A letter dated in the last couple of weeks may not be in the table yet.
Open the letter, then check for a response or close-out
The table has response and close-out columns. An empty column means nothing is posted there. It does not prove the company never responded. FDA describes a close-out letter as issued after it has evaluated the company's corrective actions.
What a missing result means
- It shows only that the table returned no match for the text you typed. Try the owner name, the legal entity and the brand name.
- FDA's Regulatory Procedures Manual describes warning letters as informal and advisory, so a missing letter says nothing about whether FDA has other concerns.
- Our index covers the letters we have summarized, not the whole FDA table.
Sources
- FDA, Warning Letters table (checked Oct. 5, 2026) · captured 2026-10-05 · tier 1
- FDA, About Warning and Close-Out Letters · captured 2026-10-05 · tier 1
- FDA, Regulatory Procedures Manual, Chapter 4: Advisory Actions (section 4-1-1) · captured 2026-10-05 · tier 1
Quotes are from the FDA documents above, retrieved Oct. 5, 2026. FDA can revise those pages. See something wrong? Request a correction.