A 503A compounding pharmacy is a state-licensed facility that mixes medications on a per-prescription basis. They buy API from US-licensed suppliers, compound under USP standards, and dispense via a real pharmacist. You access compounded peptides through telehealth platforms that route prescriptions to 503A pharmacies. The compound is pharmacy-grade pure; legal status depends on the FDA's compounding lists (semaglutide compounding lost safe harbor in 2024).
Related terms