Five Peptides Every Endurance Athlete Should Understand Buy BPC 157 Peptide 98% Purity, Lab Tested, USA Bottled I spent 4 months reporting on the peptide BPC 157 and its unlikely journey from a research lab in post communist Croatia to today's MAHA movement. Ask me anything. : r IAmA BPC 157: Experimental Peptide Creates Risk for Athletes NFL and NFLPA inform players of addition to banned substance list: BPC 157, an experimental peptide not approved for use by humans that has been found in supplements and recovery treatments.