What FDA’s record states
| Field | What FDA’s record states | Source |
|---|---|---|
| Recipient | Gram Peptides | FDA letter ↗ |
| Location | Rancho Santa Fe, CA | FDA letter ↗ |
| Letter date | Mar 31, 2026 | FDA letter ↗ |
| Posted by FDA | Apr 7, 2026 | FDA index ↗ |
| Issuing office | Center for Drug Evaluation and Research (CDER) | FDA letter ↗ |
| Subject | Unapproved New Drugs Sold Over the Internet | FDA letter ↗ |
| MARCS-CMS number | 721806 | FDA letter ↗ |
| GLP-1 drugs named | Tirzepatide, Retatrutide | FDA letter ↗ |
| Response letter | Not published by FDA | FDA letter ↗ |
| Closeout letter | Not published by FDA | FDA letter ↗ |
“The FDA has observed that your website offers “Retatrutide” (also referred to by your firm as “GLP-1-R peptide”) and “Tirzepatide” (also referred to by your firm as “GLP-2 peptide”) and “Bacteriostatic Water for Injection” (hereinafter Gram Peptides products) for sale in the United States.”FDA warning letter to Gram Peptides, Mar 31, 2026 · read the full letter on fda.gov ↗
What this is and is not.A warning letter is FDA’s statement of what it considers significant violations. It is an allegation, not a court finding, and the firm can respond. A closeout letter is posted when FDA confirms the violations were corrected.
Other GLP-1 letters FDA issued that week
Source
Every field above is copied from FDA’s page for this letter, read Oct 3, 2026. The letter on fda.gov ↗ · All 161 GLP-1 warning letters