Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries and Athletic Performance Sports Medicine Springer Nature Link TransCelerate Guidance Document for FDA Form 1572 Completion FDA to weigh easing limits on unproven peptides promoted by RFK Jr. The FDA has issued clear signals on BPC 157: it is not approved for human use in any form due to potential significant safety risks. This critical classification profoundly impacts research and BPC 157: Experimental Peptide Creates Risk for Athletes