FDA warning letters to peptide sellers, 2021
1 letter dated 2021 is on record for storefronts in the registry. Each row gives the date printed on the letter, the recipient as the record gives it, the agency's own page and the storefront's status on the day the file was last checked. Other years: 2020, 2024, 2025, 2026 · all years.
| Letter date | Recipient, as the record gives it | Products named | Storefront at last check | Letter | Pages |
|---|---|---|---|---|---|
 Umbrella LabsUmbrella, Tucson, Arizona | not counted in the file | On watchlist | fda.gov ↗ | letter page · file C |
What the record says each letter concerned
From the letter pages- Umbrella Labs: letter dated 2021-05-18The record says the letter concerned products named in the letter across several product categories sold at umbrellalabs.is, described by the agency as unapproved new drugs and misbranded, and that one product named in the letter was found to contain an undeclared drug ingredient.C
Reader questions
Answered from the fileWhich peptide sellers on file received an FDA warning letter in 2021?
Umbrella Labs, letter dated 2021-05-18, addressed to Umbrella, Tucson, Arizona. The list covers storefronts the desk keeps a file on, not every recipient in the agency's database.
Are the 2021 recipients still trading?
Umbrella Labs: on watchlist at the check on 2026-10-19.
Products are described only as GLP-class products or products named in the letter; the agency's own wording is on fda.gov. The tracker lists every year; the watchlist carries closures alongside the letters. Every storefront listed sells material labeled for laboratory research use only.