Compounded "semaglutide" is not FDA approved semaglutide.com RFK Jr. promotes peptides. Now the FDA weighs easing limits on the unproven chemicals Which non FDA (United States Food and Drug Administration) approved peptides, such as BPC 157 (Body Protection Compound 157) and TB 500 (Thymosin Beta 500), are likely legitimate for medical use under strict supervision? The Human Lab Rats Injecting Themselves with Peptides Office for Science and Society McGill University