Peptides are a HUGE category. Were talking about everything from insulin to GLP 1s Some are incredibly well researched and FDA approved., But in the injury recovery world? Thats where it gets a NFL and NFLPA inform players of addition to banned substance list: BPC 157, an experimental peptide not approved for use by humans that has been found in supplements and recovery treatments. BPC 157 + KPV BPC 157 Pure, Integrative Peptides Natural Healthy Concepts