BPC 157: Experimental Peptide Creates Risk for Athletes Which non FDA (United States Food and Drug Administration) approved peptides, such as BPC 157 (Body Protection Compound 157) and TB 500 (Thymosin Beta 500), are likely legitimate for medical use under strict supervision? FDA Is Expected to Lift Restriction on Peptides, Heeding RFK Jr.'s Wishes The New York Times BPC 157 Peptide: Benefits, Dosage & Side Effects 2026