What Peptides Are Legal in the U.S.? Understanding FDA Approval, Compounding, and the Legal Gray Areas Holt Law The peptide problem: Hype is outrunning the evidence Most people hear not FDA approved and immediately think unsafe or ineffective but the reality is a lot more about economics than science. If something can't be patented, there's little incentive to Therapeutic Peptides in Aesthetic, Metabolic and Endocrine Conditions: Effects, Safety, Clinical Applications, and Future Perspectives Peptides, Drugs And Supplements: Science, Risks, And Alternatives Los Angeles Times