RFK Jr.'s peptide push could unleash risky drugs STAT First Opinion 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 Sends Warning Letters to More Than 50 GLP 1 Compounders and Manufacturers Wilson Sonsini FDA to weigh easing limits on unproven peptides promoted by RFK Jr.