The Peptide Craze Part 2: BPC 157, NAD and the Truth Behind the Longevity Molecule Hype Unauthorized injectable peptide drugs seized and sold by Canada Peptide may pose serious health risks Canada.ca Peptides are unproven as health aids. FDA may unleash them anyway 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