Peptides amplify signals your body already has to be capable of producing. If your thyroid or sex hormones are underperforming, the peptide has less to work with, and the peptide usually gets blamed first.

BPC-157 has real, well-documented cellular mechanisms behind it, and a human evidence base that's still surprisingly thin. Here's what the science actually shows, mechanism by mechanism, and what one patient's experience can and can't tell us.