What a compounding pharmacy does
A compounding pharmacy prepares a medication to order rather than dispensing a sealed, mass-produced product off the shelf. Traditionally that meant tailoring a drug to an individual — a liquid version for someone who can’t swallow pills, a dye-free formulation, a combined preparation. Compounding is a long-standing, legitimate part of pharmacy practice. But a compounded drug is not FDA-approved: the agency doesn’t review each preparation for safety, effectiveness, or quality the way it does a manufactured drug.
Why compounding entered the GLP-1 conversation
For most people, compounding stayed in the background until the GLP-1 shortages. When branded semaglutide and tirzepatide couldn’t meet demand, federal law opened the door for pharmacies to compound versions of drugs in shortage — and a large, lower-cost compounded market grew fast, often sold through telehealth. That made GLP-1s reachable for people priced out of the brands, but it also meant relying on products outside the FDA-approval system, where sourcing and quality can vary between a 503A pharmacy and a 503B pharmacy.
What to keep in mind
The rules here move. Compounding is generally permitted when a drug is in shortage or a patient has a documented need a manufactured product can’t meet — so as the branded GLP-1 shortages resolved through 2025–2026, what pharmacies may compound tightened. If you’re considering a compounded option, it’s worth asking which type of facility makes it, whether it’s reconstituted properly with bacteriostatic water, and — most of all — talking it through with your prescriber before you start.