There are only two options for GLP-1s: Name-brand medications made by pharmaceutical companies (Eli Lilly, Novo Nordisk) and compounded generic versions. While that’s fairly straightforward, it gets more complicated when 503A and 503B compounding pharmacies come into the mix.
To figure out what you’re getting, and who makes your semaglutide (Ozempic, Wegovy, Rybelsus, compounded) or tirzepatide (Mounjaro, Zepbound, compounded), we spoke to pharmacists, doctors, and other GLP-1 experts on the manufacturing of these popular weight loss medications. They helped us untangle the web of drugmakers and pharmacies that now supply doctors, med spas, and telehealth providers with the weight-loss drugs that are revolutionizing so many aspects of modern medicine.
