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 RFK Jr. and the Perils of Peptides Washington Monthly BPC 157: Miracle Healing Peptide or Hidden Danger? Unauthorized injectable peptide drugs seized and sold by Canada Peptide may pose serious health risks Canada.ca In 2023, the FDA deemed 19 peptide drugs too unsafe to be dispensed by compounding pharmacies, which mix components of approved drugs to create bespoke medication for people who have trouble taking