FDA Peptide Update: Category 2 Removals Explained BPC 157: Miracle Healing Peptide or Hidden Danger? FDA moves toward easing restrictions on certain peptides BioPharma Dive Therapeutic Peptides in Aesthetic, Metabolic and Endocrine Conditions: Effects, Safety, Clinical Applications, and Future Perspectives Peptides Lack Reliable Safety Information, Watchdog Warns 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.