The Peptide Gamble: A Doctor's Warning on BPC 157 and TB 500 FDA to weigh easing limits on unproven peptides FDA takes first step in possible reversal of ban on some peptides The Washington Post More Americans are injecting themselves with peptides BPC 157 aka Wolverine. This peptide is not FDA approved, but it is very popular among the biohacking population. Ashley explains the science behind it, but remember, it doesn't have human data yet, so 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,