An FDA Reversal on Peptides Could Open the Market to Unsafe Drugs ProPublica Warning: BPC 157 is a synthetic peptide and an unapproved drug, often promoted with misleading claims. It is prohibited and on the DoD Prohibited Dietary Supplement Ingredients List. Don't gamble with your FDA Moves on Peptides: What Compounding Pharmacies Need to Know FDA issued its first warning letter to a dispenser (a medical spa) for violating the Drug Supply Chain Security Act (DSCSA), including failing to source products from authorized trading partners and