A peptide capsule? BPC 157 (body protective compound) is one of the only peptides you can take in oral capsules, as it's derived from gastric juice, therefore it can with stand the Oral Peptides: FAQs on Bioavailability, Safety, and Clinical Use AJMC BPC 157 What Athletes Need to Know About Legality, Safety and Efficacy Training & Conditioning 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.