FDA Puts BPC 157, TB 500, and 5 Other Peptides Under the Microscope: What Prescribers Need to Know About the 503A Review Lengea FDA considers adding a dozen peptides to its bulk drug compounding list RAPS Big FDA review coming this July. Here's what athletes and patients should know about BPC 157, TB 500, and the broader peptide conversation. Always speak with your physician before starting any new protocol. #bpc157 # BPC 157 500 mcg Oral Capsules