Doping Won't Deter Olympics' Viewers. Just Watch. The New York Times 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 Removes Key Peptides from Category 2: What This Means for You Wait, So Are Peptides Legal Now? The science behind the peptide craze Scientific American FDA's Overreach on Compounded Peptides