What are peptides? FDA may ease restrictions on unproven health fad LiveNOW from FOX 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, of the Federal Food, Drug, and Cosmetic Act (FDCA).* BPC 157 Banned: Key Facts on the Latest FDA Decision A closer look at the unapproved peptide injections promoted by influencers and celebrities king5.com Peptides are surging in popularity. There's little evidence that they work.