FDA Is Expected to Lift Restriction on Peptides, Heeding RFK Jr.'s Wishes The New York Times of the Federal Food, Drug, and Cosmetic Act (FDCA).* Are Peptides Safe? The Clinical Reality, Are peptides safe? The answer starts with clinical medicine: most are not FDA approved and are often sold as research chemicals, with real quality, purity, What are peptides? The treatments promising weight loss and better skin, explained Vox