Are Peptides Safe? What Older Adults Need to Know 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 The FDA has issued clear signals on BPC 157: it is not approved for human use in any form due to potential significant safety risks. This critical classification profoundly impacts research and fda warning bpc 157 peptide products New Details 157