FDA to weigh easing limits on unproven peptides promoted by RFK Jr. 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 BPC 157: Miracle Healing Peptide or Hidden Danger? FDA's confusing warning letters FDA to Remove 12 Popular Peptides from the Category 2 Do Not Compound List Frier Levitt FDA Peptide Update 2026: Removal from Do Not Compound List and What It Means for Pharmacies Compounding warning letters to 503A facilities between 2017 and 2021 Journal of the American Pharmacists Association