Compounded "semaglutide" is not FDA approved semaglutide.com Some peptides are FDA approved drugs. Some are legal supplements. Some are neither. The same word, peptide, covers all three categories. The regulatory status of the specific compound is what determines legality. Gray Market Peptides: So Much Hype, So Little Data FDA to weigh easing limits on unproven peptides favored by RFK Jr. and other MAHA figures Pittsburgh Post Gazette