BPC 157: The Real Reason Why It's Not FDA Approved Stracuzzi Wellness Some peptides are FDA approved drugs. Some are legal supplements. Some are neither. The same word, peptide, covers all three categories. The regulatory status of the specific compound is what determines legality. Is BPC 157 Legal? Understanding Its Status and Implications What Peptides Are Legal in the U.S.? Understanding FDA Approval, Compounding, and the Legal Gray Areas Holt Law