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, The Peptide Gamble: A Doctor's Warning on BPC 157 and TB 500 FDA takes first step in possible reversal of ban on some peptides The Washington Post FDA to weigh easing limits on unproven peptides Are Peptides Safe? What Older Adults Need to Know