New: An FDA decision to place 19 peptides on the unsafe list was supported by numerous documented safety concerns, former officials said. Even though demand for peptide therapies has exploded since then, 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 BPC 157: Miracle Healing Peptide or Hidden Danger? RFK Jr. & claimed regenerative peptides like BPC 157 The Niche Unauthorized injectable peptide drugs seized and sold by Canada Peptide may pose serious health risks Canada.ca