Peptides, Drugs And Supplements: Science, Risks, And Alternatives Los Angeles Times 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. FDA Compliance for Peptide Therapy and BPC 157 Holt Law RFK Jr pushes for FDA approval of BPC 157 peptide Eric Topol, MD posted on the topic LinkedIn