FDA to weigh easing limits on unproven peptides favored by RFK Jr. and other MAHA figures Pittsburgh Post Gazette In 2026, the question "Are peptides legal?" has been answered with a decisive regulatory crackdown. , The FDA has moved beyond general oversight into targeted enforcement. Popular wellness 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 of the Federal Food, Drug, and Cosmetic Act (FDCA).* Unauthorized injectable peptide drugs seized and sold by Canada Peptide may pose serious health risks Canada.ca