What is the difference between a compounding pharmacy and a research peptide seller?

They are not the same legal picture. This site's legal-status fields are national lines on approval or research use, not a pharmacy directory. Where the law allows it, a compounding pharmacy makes a product for a named patient with a prescription. Sermorelin's US field says its old approval was dropped and it is now available through compounding pharmacies, the leftover of Geref. Tesamorelin, semaglutide, and tirzepatide have FDA approved finished products (Egrifta, Ozempic, Wegovy, Rybelsus, Mounjaro, Zepbound) that are not research chemicals. A research seller labels a vial research use only and not for people. Compounding is not that research-chemical route, and it is not the approved branded pen either. This dataset does not name pharmacies, does not track state-by-state compounding rules, and does not tell you where to buy. Check the compound's /legal page for the national field this site stores.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of research peptides, the category. What research peptides are, legally and practically, before getting into specific compounds.