Why Are People Injecting Themselves with Peptides? The New Yorker Warning: BPC 157 is a synthetic peptide and an unapproved drug, often promoted with misleading claims. It is prohibited and on the DoD Prohibited Dietary Supplement Ingredients List. Don't gamble with your The Peptide Gamble: A Doctor's Warning on BPC 157 and TB 500 People are turning themselves into lab rats': the injectable peptides craze sweeping the US Well actually The Guardian FDA to weigh easing limits on unproven peptides