BPC-157 is derived from a protective protein found naturally in the human stomach. In the digestive system, this protein plays a role in maintaining and protecting the integrity of the gastrointestinal lining.
The isolated peptide — Body Protection Compound-157 — is a synthetic sequence of 15 amino acids modeled on that naturally occurring protein. Because it is biologically similar to compounds already found in human gastric juice, it is generally well-tolerated.
BPC-157's gastric origin is the basis for two of its most important properties:
Gastrointestinal affinity Because BPC-157 is derived from a protein that already exists in the gut, it has a direct restorative effect on the digestive tract — repairing the tight junctions in the gut lining, reducing mucosal inflammation, and protecting the stomach from damage caused by NSAIDs, caffeine, and inflammatory bowel conditions.
Favorable tolerability Its biological similarity to compounds naturally found in human gastric juice contributes to BPC-157's generally well-tolerated profile, including its low rate of systemic side effects.