FDA warning letter · File xcel-peptides · Storefront checked
Xcel Peptides: FDA warning letter dated
xcelpeptides.com · recipient as the record gives it: Xcel Research LLC, Sheridan, Wyoming · storefront at check: On watchlist
What the record says
What the letter concerned
The record counts seven products named in the letter, GLP-class products among them, each described by the agency as an unapproved new drug. The record notes the agency stated that "for research use only" labeling does not change intended use. The agency's review of the website is dated October 2024.
Every storefront page the desk fetched rendered a sign-in gate, so whether the products named in the letter are still listed could not be read.
The letter is dated and is addressed, as the record gives it, to Xcel Research LLC, Sheridan, Wyoming. We record the date printed on the letter and the address of the agency's page; we do not reproduce the agency's text, and we do not record whether the company replied. On the storefront at xcelpeptides.com was recorded as on watchlist, with 4 of 8 checks verified in the ledger beside this page.
Facts on file
The letter, line by line
Date printed on the letter
Recipient, as the record gives it
Xcel Research LLC, Sheridan, Wyoming
Products named
7 products, described on this desk only as GLP-class products or products named in the letter
Response deadline
Not recorded in the file; the letter on fda.gov states it
Company response
Not recorded in the file; posted by the agency on the same page when received
Is Xcel Peptides still in business after the FDA warning letter?
At the desk's check on 2026-10-19 the storefront was recorded as on watchlist, with 4 of 8 checks verified. A letter does not close a storefront by itself; the tracker records only what the storefront showed on the check date.
Did Xcel Peptides respond to the FDA?
The file does not record a response. When the agency posts a company's reply or a close-out letter it does so on the same fda.gov page the letter sits on, which is linked from this page; the desk does not paraphrase either.
What does the letter do to the file?
The "no FDA warning letter on record" check is stamped Not verified and the seal is held at C or below for as long as the letter stands in the public record. The other seven checks are read as usual; on this file 4 of 8 are verified.
What a warning letter is and is not, in general terms, is set out in What an FDA warning letter actually says; the research-use question in Research-use-only labeling explained. The file was read on ; corrections to editors@peptidetruth.org. Xcel Peptides sells, or sold, material labeled for laboratory research use only; this page concerns a public document about the company, nothing else.
