Peptide BPC 157 Does It Work? Breaking Down the Evidence and the Hype Peptides for Longevity: BPC 157, TB 500, GHK Cu & CJC 1295 BPC 157 is one of the peptides that has been getting a lot of attention recently. It is a synthetic peptide derived from a protein found in human gastric juice. In experimental research, BPC 157 Oral 500mcg Premium USA Made Products BPC 157 & The Gut Brain Axis: A Practitioner's Definitive Review of the Evidence