The FDA scheduled a hearing on peptides and the implications could be significant for prescribers and 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. The Human Lab Rats Injecting Themselves with Peptides Office for Science and Society McGill University FDA Targets GLP 1 and Peptide Compounding, Advertising and 'Research Use Only' Labeling