Drugs including Wegovy (semaglutide), Saxenda (liraglutide), and Zepbound (tirzepatide) belong to a class of medications called incretin mimetics, so named because they imitate the incretin hormones found in the gut that aid in blood sugar regulation. Semaglutide and liraglutide are GLP-1 (glucagon-like peptide-1) receptor agonists, and tirzepatide is a dual GLP-1 and GIP (glucose-dependent insulinotropic polypeptide) receptor agonist. Compounded, off-label incretin mimetics aren’t FDA-approved.