Compounding Pharmacies for Weight-Loss Drugs Are Booming. Should You Trust Them?

Compounding pharmacies offering weight-loss drugs, like tirzepatide, have seen a surge in popularity. However, their efficacy and safety remain questionable. Diane Kinkade, a 72-year-old woman, sought a GLP-1 weight-loss medication after being diagnosed with prediabetes and high blood pressure. She initially received a compounded version of tirzepatide from a telehealth site, which partnered with a compounding pharmacy to save her $250 monthly.

Although she experienced initial weight loss, she later suffered severe side effects such as brain fog, nausea, diarrhea, and exhaustion. After contacting the telehealth site for assistance, she found only canned, AI-generated responses, leading her to discontinue the medication.

Eli Lilly, the pharmaceutical company behind Zepbound, has strict policies against compounded versions of tirzepatide. The company claims it is the only lawful supplier of FDA-approved tirzepatide in the United States. Despite this, patients using compounded GLP-1s, estimated at 5 million in the U.S., remain largely unregulated. In July, an FDA committee recommended allowing compounding pharmacies to prepare six peptides for consumer use, although the FDA has yet to decide on the matter.

Compounding pharmacies, while existing since the 1930s, are not subject to the same stringent regulations as large drug manufacturers. This regulatory gap has led to numerous safety issues in the past. The infamous New England Compounding Center, for instance, was found to produce contaminated medications, resulting in dozens of deaths and severe safety lapses. In response, Congress later established a new category for compounding pharmacies serving large numbers of patients (503Bs) with more stringent regulations.

The situation surrounding compounding pharmacies and weight-loss drugs highlights a broken regulatory system, where telehealth sites and compounding pharmacies are promoting unregulated alternatives to FDA-approved medications. As more people turn to these options, the potential for increased risks and safety concerns grows.