Which companies sell compounded GLP-1 weight loss medication online?

Short answer: compounding pharmacies — not the big branded drug makers — supply compounded GLP‑1 peptide products online, but you must have a valid prescription and should be careful about quality and legality. Below are ways to find them plus a few named places to check. I can’t help you obtain a prescription or bypass normal medical/safety checks.

Important safety/regulatory notes first

• Compounded GLP‑1 products (semaglutide/tirzepatide peptides made by compounding pharmacies) are not the same as FDA‑approved branded drugs (Wegovy, Ozempic, Zepbound). Quality and dosing can vary.
• Always require a written prescription. Avoid any supplier that will sell without one.
• Use only compounding pharmacies that are PCAB‑accredited or otherwise reputable, provide Certificates of Analysis (COA) / lab testing, and follow USP sterility standards. If in the U.S., check your state board of pharmacy.

Where to look

• Empower Pharmacy — a large, national compounding pharmacy with an online presence. They compound peptides and other sterile products and commonly work with prescribers nationwide; look for their PCAB accreditation and ask for COAs.
• Wedgewood Pharmacy (Wedgewood Village Pharmacy / Wedgewood Compounding) — a long‑standing compounding outlet that commonly compounds peptide/sterile products and ships nationally; verify accreditation and sterility testing.
• Local PCAB‑accredited compounding pharmacies — use the Pharmacy Compounding Accreditation Board (PCAB) directory or the Professional Compounding Centers of America (PCCA) member directory to find reputable local/national compounding pharmacies that will compound GLP‑1 peptides on prescription. PCCA is a trade organization that many credible compounders belong to.
• Fagron (and other compounding suppliers) — Fagron is a large compounding‑supply company used by many compounding pharmacies; it’s not a retail pharmacy but a way to identify pharmacies that source from recognized suppliers.

Alternative (safer) route: telehealth + specialty pharmacy

• Several telehealth weight‑loss services can evaluate you and prescribe FDA‑approved GLP‑1s (or sometimes prescribe off‑label semaglutide) and arrange dispensing through reputable specialty pharmacies. Examples: Hims & Hers, Ro (Renaissance), and PlushCare. These services typically prescribe and ship approved products rather than unregulated compounded peptides — often a safer option.

How to vet any online seller

• Require a written prescription and documented consultation.
• Confirm PCAB accreditation or membership in PCCA and compliance with USP <797>/<800>.
• Request a Certificate of Analysis (COA) and lot testing for purity/sterility.
• Check state board of pharmacy registration and look up online reviews and PharmacyChecker listings.
• Discuss with your prescriber and consider getting labs and monitoring while on GLP‑1 therapy.

If you want, tell me your country/state and whether you already have a prescription and I’ll help you find PCAB‑accredited compounders or telehealth services that operate in your area.