PDF) Click, click, buy: The market for novel synthetic peptide hormones on mainstream e commerce platforms in the UK Introduction to the Poisons Standard Application for a wholesale licence Poisons Legislative nomenclature for S2, S3, S4 and S8 medicines Download Table 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.