BPC 157: Miracle Healing Peptide or Hidden Danger? Compounded "semaglutide" is not FDA approved semaglutide.com FDA Targets GLP 1 and Peptide Compounding, Advertising and 'Research Use Only' Labeling BPC 157: Miracle Healing Peptide or Hidden Danger? 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.