A brand-name GLP-1 - Wegovy, Zepbound, Ozempic - is made by the manufacturer, approved by the FDA and sold in standardized pens or pills. A compounded GLP-1 is prepared by a state-licensed pharmacy using the same active ingredient (semaglutide or tirzepatide), usually in vials you draw up with a syringe. It is not FDA-approved: the FDA does not review compounded drugs for safety, effectiveness or quality before they reach you.
So the price gap - often more than $1,000 a month - is paying for regulatory review, manufacturing consistency and a product that insurance may cover. Whether that is worth it depends on your budget, your coverage and how much uncertainty you are comfortable with.
