Sources: U.S. Food and Drug Administration (FDA) Compounding and the FDA (503A & 503B guidance) FDA warning letters on unapproved peptide products National Institutes of Health (NIH) PubMed The FDA has issued clear signals on BPC 157: it is not approved for human use in any form due to potential significant safety risks. This critical classification profoundly impacts research and commercialization People are turning themselves into lab rats': the injectable peptides craze sweeping the US Well actually The Guardian Is BPC 157 Banned? Oral vs. Injectable Forms Explained FDA to weigh easing limits on unproven peptides