The FDA has issued warning letters to multiple companies marketing compounded Retatrutide, an investigational drug from Eli Lilly still in Phase II trials. While early studies have shown promising weight loss results, Retatrutide fda warning bpc 157 peptide products New Details 157 FDA Puts BPC 157, TB 500, and 5 Other Peptides Under the Microscope: What Prescribers Need to Know About the 503A Review Lengea US FDA to convene expert panel to review wider access to some peptides Reuters FDA has removed certain bulk drug substances that were placed on the category two list and has announced it will consult the Pharmacy Compounding Advisory Committee (PCAC) for potential future inclusion of FDA to weigh easing limits on unproven peptides favored by RFK Jr. and MAHA supporters PBS News