Operators looking up peptide sciences are usually checking a research-peptide seller, or checking why that seller’s store is gone. The company’s own site says it voluntarily shut down and stopped selling research products. The notice does not name a cause.
The notice on peptidesciences.com
On Oct. 4, 2026, the homepage at peptidesciences.com opened on a shutdown notice, not a product catalog. The notice says that after careful consideration, Peptide Sciences decided to voluntarily shut down operations and discontinue the sale of its research products. It says the company keeps the rights in its name, brand, trademarks, intellectual property, and goodwill, and that it will enforce them.
The same page says any website, platform, entity, or individual claiming affiliation with Peptide Sciences, representing itself as a successor, or claiming to sell the company’s products is unauthorized, fraudulent, and unaffiliated. It says Peptide Sciences does not authorize any third party to use its name, brand, trademarks, or likeness, and it asks readers to report that activity to service@peptidesciencesmail.com.
Two older storefront lines are still in the HTML under that notice. The browser title is still “Buy Peptides for Scientific Research and Development.” Further down, the page still invites a shopper to create an account for a credit at checkout on research products. The Oct. 4 fetch did not include a product list. The shutdown sentence and the leftover checkout copy are both on the page. Only the shutdown sentence says sales stopped.
An Internet Archive capture dated March 8, 2026, 3:21 p.m. UTC (11:21 a.m. ET) already carries a shorter form of the decision. The wording there is that Peptide Sciences had “made the decision to voluntarily shut down operations and discontinue the sale of our research products,” followed by a thank-you. That capture does not include the successor warning. The Oct. 4 page does. The captures used here do not date the day that warning was added.
The March 8 capture dates the notice, not the hour sales stopped. A Wayback query for the homepage from Jan. 1, 2026, through Oct. 4, 2026, shows a catalog on Jan. 3 and the notice on March 8, with no homepage capture in between in that result set.
What the store page said while it was still a store
The Jan. 3, 2026, 12:48 a.m. UTC capture (7:48 p.m. ET on Jan. 2) is a catalog. It describes Peptide Sciences as a seller of purified peptides, proteins, and amino acid derivatives for scientific research and development. The visible product names include items labeled BPC-157, TB-500, CJC-1295, and PT-141, among others. The page says the company sought purity above 99 percent and said products were manufactured in the United States. Those are the company’s sentences. No vial, certificate of analysis, or manufacturing site was tested for this note.
The same capture prints a mailing address: P-Sciences, 2255 Glades Rd., Suite 324A, Boca Raton, FL 33431. It prints the phone number 1-800-986-6401 and the email service@peptidesciencesmail.com, the address still used on the shutdown notice for trademark reports. The terms on that page say the products are sold for laboratory research purposes only, are not intended for use as food additives or drugs, and that the site is governed by the laws of Nevis. A line in a terms file is not a secretary-of-state record. It is what the site showed shoppers.
The catalog page also talks about research interest in muscle, wound healing, aging, and immune function. That is marketing copy on a page that elsewhere says the goods are not drugs. This note does not adopt those claims, and it is not a review of whether any named peptide does what a product blurb suggests.
What the notice leaves out
The shutdown text does not mention the Food and Drug Administration, a warning letter, a seizure, a bank, a card processor, a lawsuit, or a statute. “Voluntary” is the company’s word for the decision. It does not describe what prompted the decision. This note does not fill that gap with a guessed cause.
FDA letters from Aug. 24 name other sellers
A pass through FDA’s public warning-letter pages on Oct. 4, 2026, did not turn up a letter addressed to Peptide Sciences. A missed page is still possible. The absence is a search result, not a certificate.
FDA did post five warning letters on Aug. 24, 2026, to other businesses selling peptide products on the web. All five come from the Center for Drug Evaluation and Research:
- Royal Peptides LLC, MARCS-CMS 734884
- Peak Performance Peptides, MARCS-CMS 735127
- NuScience Peptides LLC, MARCS-CMS 733652
- Peptide Partners LLC, MARCS-CMS 735063
- TXP Innovations LLC, doing business as Tex Peptides, MARCS-CMS 735067
Each letter says named products on that firm’s site were unapproved new drugs under section 505(a) of the Federal Food, Drug, and Cosmetic Act. The Tex Peptides letter, read here in full, says labeling the goods “research use only” and “not for human or veterinary use” did not control the outcome. FDA wrote that the site showed the products were intended as drugs for human use, and that bacteriostatic water sold as a solvent supplied a way to prepare an injectable. The other four letters make the same intended-use point about the sites they each reviewed.
Those letters are dated months after the Peptide Sciences notice was already on the Internet Archive. None of them names Peptide Sciences. They do not explain this shutdown. They are the later public record for a telehealth company, a compounding pharmacy, or a cash-pay clinic brand that still has to read a vendor page on which a research-only line and human-use language sit together.
What belongs in the vendor file
An operator that still has a Peptide Sciences invoice can attach three public records to it: the Jan. 3 catalog capture, the March 8 notice, and the Oct. 4 notice with the trademark paragraph. That set shows what the site said, and when a third party can check it. It does not show an FDA order, a recall, or a reason.
The trademark paragraph matters for vendor files because the name is now a disputed label. A new website that says it is Peptide Sciences, or the successor to Peptide Sciences, is making a claim the current homepage rejects. Matching a logo or a product list to the old catalog is not the same thing as a letter from the company that owns the domain.
Search also mixes this seller up with a journal. The American Peptide Society says Peptide Science is its official journal, a peer-reviewed research title. Same words, different publisher. Nothing on the shutdown notice connects the seller to that journal.
Nothing here says a peptide works for any use. Nothing here forecasts an enforcement action against this company, a clinic, or a pharmacy.
