The Sunlight Experiment

Supplement Monograph

BPC-157

PeptideHealing

BPC-157 is a synthetic 15-amino-acid research peptide studied mainly in animals for gut, tendon, and injury repair; it is not an approved drug or dietary supplement.

Work in progress Updated July 2026

What Is BPC-157?

BPC-157 (“Body Protection Compound-157”) is a synthetic pentadecapeptide — a 15-amino-acid sequence derived from a protein found in gastric juice — marketed and used experimentally as a “healing” peptide. It is taken (typically by injection) in the hope of accelerating repair of the gut lining, tendons, ligaments, and other soft tissue. It is a research chemical, not an approved medicine or dietary supplement, and the evidence base is overwhelmingly preclinical: the great majority of published work is animal data, much of it from a single research group.

Evidence

Most of the BPC-157 literature is preclinical. A 2021 review in Frontiers in Pharmacology summarises a large body of animal (mostly rodent) work reporting accelerated healing across gut, skin, muscle, tendon, and other injury models 1Reference 1Sikiric P et al. · 2021ReviewStable Gastric Pentadecapeptide BPC 157 and Wound Healing — review of preclinical (animal) researchView study → — but these are animal findings and do not establish that the peptide works, or is safe, in humans. Human clinical evidence is minimal: only a handful of very small pilot studies exist, with no adequately powered randomised placebo-controlled trials, so the striking animal results have not been confirmed in people. Claims that BPC-157 reliably heals injuries or “fixes the gut” in humans are not supported by a verified human trial in this pass and should be regarded as unproven.

Dosage & Safety

There is no established human dose for BPC-157; regimens circulating online are not derived from controlled human trials, and this page makes no dosing recommendation. BPC-157 is not approved by the FDA or other major regulators as a drug or as a dietary supplement, and in the United States it has been flagged as an unapproved substance found in some products; it is also prohibited in sport. Human safety, long-term effects, drug interactions, and pregnancy/lactation safety are not established. This entry is informational only and is not an endorsement of use.

References

  1. Sikiric P, et al. (2021). Stable Gastric Pentadecapeptide BPC 157 and Wound Healing — review of preclinical (animal) research. Front Pharmacol. https://pubmed.ncbi.nlm.nih.gov/34267654/