What is a reputable source for peptides?
A reputable peptide source requires a prescription, runs a real medical intake reviewed by a licensed clinician, and dispenses from a state-licensed, FDA-registered U.S. compounding pharmacy. The pharmacy should be able to confirm third-party purity testing (HPLC and mass spectrometry) on the lot it dispensed, provide storage and beyond-use dating, and put a human on the phone when you have questions. Any site that sells peptides with a credit card and no clinician review is operating outside the medical system.