FDA to weigh easing limits on unproven peptides favored by RFK Jr. and other MAHA figures wkyc.com BPC 157: The peptide with big claims and scant evidence STAT The U.S. Food and Drug Administration is moving toward allowing compounding pharmacies to produce more than a dozen injectable peptides that were banned because of potentially significant safety risks, the New York FDA to weigh easing limits on unproven peptides promoted by RFK Jr.