Semaglutide products sold online without a prescription may pose multiple risks to consumers, new research found.
Of six test purchases of semaglutide products offered online without a prescription, only three were actually received. The other three vendors demanded additional payment. Of the three delivered, one was potentially contaminated, and all three contained higher concentrations of semaglutide than indicated on the label, potentially resulting in an overdose.
“Semaglutide products are actively being sold without prescription by illegal online pharmacies, with vendors shipping unregistered and falsified products,” wrote Amir Reza Ashraf, PharmD, of the University of Pécs, Hungary, and colleagues in their paper, published online on August 2, 2024, in JAMA Network Open.
The study was conducted in July 2023, but its publication comes a week after the US Food and Drug Administration (FDA) issued an alert about dosing errors in compounded semaglutide, which typically does require a prescription.
Study coauthor Tim K. Mackey, PhD, told this news organization, “Compounding pharmacies are another element of this risk that has become more prominent now but arguably have more controls if prescribed appropriately, while the traditional ‘no-prescription’ online market still exists and will continue to evolve.”
Overall, said Dr. Mackey, professor of global health at the University of California San Diego and director of the Global Health Policy and Data Institute,
He advises clinicians to actively discuss with their patients the risks associated with semaglutide and, specifically, the dangers of buying it online. “Clinicians can act as a primary information source for patient safety information by letting their patients know about these risks ... and also asking where patients get their medications in case they are concerned about reports of adverse events or other patient safety issues.”
Buyer Beware: Online Semaglutide Purchases Not as They Seem
The investigators began by searching online for websites advertising semaglutide without a prescription. They ordered products from six online vendors that showed up prominently in the searches. Of those, three offered prefilled 0.25 mg/dose semaglutide injection pens, while the other three sold vials of lyophilized semaglutide powder to be reconstituted to solution for injection. Prices for the smallest dose and quantity ranged from $113 to $360.
Only three of the ordered products — all vials — actually showed up. The advertised prefilled pens were all nondelivery scams, with requests for an extra payment of $650-$1200 purportedly to clear customs. This was confirmed as fraudulent by customs agencies, the authors noted.
The three vial products were received and assessed physically, of both the packaging and the actual product, by liquid chromatography-mass spectrometry to determine purity and peptide concentration, and microbiologically, to examine sterility.
Using a checklist from the International Pharmaceutical Federation, Dr. Ashraf and colleagues found “clear discrepancies in regulatory registration information, accurate labeling, and evidence products were likely unregistered or unlicensed.”
Quality testing showed that one sample had an elevated presence of endotoxin suggesting possible contamination. While all three actually did contain semaglutide, the measured content exceeded the labeled amount by 29%-39%, posing a risk that users could receive up to 39% more than intended per injection, “particularly concerning if a consumer has to reconstitute and self-inject,” Dr. Mackey noted.
At least one of these sites in this study, “semaspace.com,” was subsequently sent a warning letter by the FDA for unauthorized semaglutide sale, Mackey noted.
Unfortunately, he told this news organization, these dangers are likely to persist. “There is a strong market opportunity to introduce counterfeit and unauthorized versions of semaglutide. Counterfeiters will continue to innovate with where they sell products, what products they offer, and how they mislead consumers about the safety and legality of what they are offering online. We are likely just at the beginning of counterfeiting of semaglutide, and it is likely that these false products will become endemic in our supply chain.”
The research was supported by the Hungarian Scientific Research Fund. The authors had no further disclosures.
A version of this article appeared on Medscape.com.