The peptide problem: Hype is outrunning the evidence 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, The FDA just announced that they're taking steps to lift restrictions on 12 peptides including BPC 157 and TB 500 making them accessible through compounding pharmacies again. This is a HUGE step Peptide Therapy for Healing: 4 Promising Peptides That Accelerate Recovery Why Are People Injecting Themselves with Peptides? The New Yorker