Pentadecapeptide BPC 157 and the central nervous : Neural Regeneration Research Peptide BPC 157 Does It Work? Breaking Down the Evidence and the Hype People talk about BPC 157 like it's one thing. It isn't. Oral BPC 157 stays local. It survives digestion long enough to act on the GI mucosa, then clears before it reaches systemic circulation. Oral BPC 157 Peptide Perfectly Healthy SA