FDA Peptide Reclassification 2026: What It Means for Providers 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, FDA Lifts Ban on Peptides: Muscle Growth & Recovery Benefits FDA Lifts Ban on Key Peptides Slim 'n Sleek An FDA Reversal on Peptides Could Open the Market to Unsafe Drugs ProPublica The science behind the peptide craze Scientific American