Americans Paying for Cheap Online Semaglutide May Be Sending Money to Vendors That Also List Fentanyl Precursors

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The United States was the source of about 57% of identifiable payments to those vendors, TRM said. The Wall Street Journal reported on the same vendor overlap that day, according to a KFF Health News morning briefing.

Many people shop this way because brand-name GLP-1 drugs have often cost more than $1,000 a month. But a vial labeled “research use only” offers no assurance of what is inside, how much drug it holds, or whether it is sterile. The payment may also reach sellers tied to the illegal opioid supply chain.

TRM identified more than 150 Chinese chemical makers accepting cryptocurrency as of the third quarter of 2026, though not all are active. About 75% list both fentanyl precursors and peptides, which TRM calls a lower-bound estimate. Most payments have moved from Bitcoin to the Tether stablecoin on the TRON network. In July, Axios reported Chainalysis data showing crypto payments to gray-market peptide vendors reached $27 million in the first quarter of 2026 alone.

One seller named in the report, Anhui Rencheng Technology, listed semaglutide and the tanning peptide Melanotan II as of September. The U.S. Justice Department charged that company in a fentanyl precursor case in June 2023. TRM described how vendors hide fentanyl-related listings while keeping peptide storefronts open, writing that “this concealment is deliberate.”

There is an important limit. TRM cannot tell how much money was paid for peptides versus fentanyl ingredients, so the report does not show that individual buyers funded trafficking. It shows that the same sellers collect both kinds of payments.

The FDA treats semaglutide, tirzepatide, and retatrutide sold “for research purposes” or “not for human consumption” as unapproved drugs, according to its page on unapproved GLP-1 drugs. Retatrutide is not approved for any use. The agency has also received reports of dosing errors with compounded semaglutide, some requiring hospitalization. In August, the FDA sent warning letters to five websites selling unapproved GLP-1 products.

“Patients should obtain a prescription from their doctor and fill the prescription at a state-licensed pharmacy,” the FDA advises.

FDA Commissioner Dr. Martin Makary said in February that the agency’s actions aim “to safeguard consumers from drugs for which the FDA cannot verify quality, safety, or efficacy,” in an FDA announcement on non-approved GLP-1 drugs.

Poison centers have also seen more GLP-1 calls. A Journal of Medical Toxicology study counted 10,033 GLP-1 exposures reported from 2012 to 2023, with wrong-dose errors the most common. That study did not separate gray-market products from prescribed ones.

The FDA’s BeSafeRx online pharmacy checklist says a safe online pharmacy requires a valid prescription, has a U.S. address and phone number, offers access to a licensed pharmacist and is licensed by a state board of pharmacy. Red flags include no prescription requirement, prices that seem too good to be true, and packaging in a foreign language or without an expiration date.

The National Association of Boards of Pharmacy offers a free Safe Site Search tool showing whether a website is accredited or on its Not Recommended list. Sites ending in “.pharmacy” are accredited by the group. Given TRM’s findings, a seller that asks for payment only in cryptocurrency is another warning sign.

Fake products have also reached the regular supply chain. The FDA warned about counterfeit Ozempic pens found in the U.S. drug supply most recently in December 2025, so patients who notice unusual packaging, labels or pen markings should ask their pharmacist before using the product.

Legal prices have also fallen. The federal TrumpRx site lists self-pay prices of $199 a month for the Wegovy pen and Ozempic, $149 for the Wegovy pill and $299 for Zepbound. Some of these prices apply only to certain doses or periods. Novo Nordisk’s $199 Wegovy pen price is an introductory offer for new patients’ first two fills that runs through Dec. 31, 2026, and the $149 Wegovy pill price applies to the lowest dose. Eli Lilly’s LillyDirect Zepbound page lists Zepbound from $299 for the starting dose, rising for higher doses. These programs require a prescription and are cash-pay.

People already using a gray-market product should not stop or switch abruptly without talking to a clinician, who can help plan a safe move to an approved source. Severe abdominal pain, persistent vomiting, fainting, or signs of an allergic reaction need prompt care. MedicalDaily will follow enforcement tied to the vendors’ TRM identified.

What did TRM Labs find? Crypto payments to Chinese vendors listing both peptides and fentanyl precursors rose 32% from 2023 to 2025, with U.S. buyers the largest identifiable source.

Does buying peptides online mean I funded fentanyl? Not necessarily. TRM cannot separate peptide purchases from precursor purchases, but the same sellers receive both.

Why is “research use only” a red flag? The FDA considers GLP-1 drugs sold with that label unapproved, meaning their quality, dose, and sterility cannot be verified.

How can I check an online pharmacy? Look for a prescription requirement, a U.S. address, and a state license, and search the site on NABP’s Safe Site Search.

Are there cheaper legal options? Yes. TrumpRx and LillyDirect list self-pay prices from $149 to $299 a month for some doses, with a prescription.