What off-label means
When the FDA approves a drug, it approves it for specific uses, doses, and patient groups — that’s the “label.” Off-label use is when a licensed clinician prescribes that approved drug outside those boundaries: a different condition, a different dose, or a different age group. It’s legal, common across medicine, and often well-supported by evidence. What the FDA regulates is how manufacturers may market a drug, not how clinicians may prescribe an approved one.
Off-label use and GLP-1s
GLP-1s are a textbook example. Semaglutide is sold as Ozempic, approved for type 2 diabetes, and as Wegovy, approved for weight management. Prescribing Ozempic specifically to lose weight is off-label, while Wegovy is on-label for that purpose. Same molecule, different approved labels — which is why the on-label vs off-label distinction can feel like a technicality even though it carries real weight for coverage and documentation.
Why it matters for you
Off-label doesn’t mean unproven or unsafe, but it does have practical consequences. Insurers may be less willing to cover an off-label use, which can trigger a prior authorization fight. And the drug’s safety information still applies — the contraindications and boxed warning on a GLP-1 hold whether you’re using it on- or off-label. As always, the right use for you is a conversation with your prescriber.