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 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 The Peptide Craze Part 2: BPC 157, NAD and the Truth Behind the Longevity Molecule Hype Is BPC 157 Banned? Oral vs. Injectable Forms Explained FDA Issues 115 Warning Letters to Retailers Selling Unauthorized E Cigarettes Buchanan Ingersoll & Rooney PC BPC 157: The peptide with big claims and scant evidence STAT