BPC-157 explained: a research primer

A synthetic pentadecapeptide built from 15 amino acids, BPC-157 (Body Protection Compound-157) represents a partial sequence drawn from a larger protein identified in gastric juice. It carries the CAS number 137525-51-0.

This compound is designated research-use-only (RUO) and has no approval for therapeutic use in humans. Any work involving it must remain within the bounds of the relevant regulations.

Evidence from cell-culture and animal studies points to BPC-157 engaging with a number of biological pathways:

• Growth hormone receptor pathways — investigations have looked at how BPC-157 might modulate the GH-receptor signalling cascade, a process tied to cellular growth and repair.

• Nitric oxide (NO) system — a range of studies report an influence on NO production, which contributes to vascular function and tissue perfusion.

• Tendon and ligament fibroblasts — rat-model work has documented quicker collagen reorganisation after tendon damage.

• Gastrointestinal mucosa — given its origin in gastric juice, researchers have examined its cytoprotective action on the intestinal epithelium.

Most of the published literature relies on rodent models — rats or mice. Recurring lines of inquiry cover:

• . Tendon-to-bone healing (Achilles tendon transection models)
• . Muscle recovery following crush injury
• . Intestinal anastomosis healing
• . Corneal wound healing
• . Bone regeneration in fracture models

To date in 2026, no double-blind, placebo-controlled human clinical trial has been finished or published.

BPC-157 ships as a lyophilized (freeze-dried) powder. When handling it in the lab:

• Keep at −20 °C for long-term storage, or 4 °C short-term (≤ 4 weeks)
• Reconstitute using bacteriostatic water (0.9% benzyl alcohol) or sterile saline
• Do not subject it to repeated freeze-thaw cycles
• Shield it from light and moisture

Reverse-phase HPLC, carried out independently, confirms German Aminos BPC-157 at ≥ 99% purity. Each batch comes with a Certificate of Analysis (CoA) you can view online, complete with the HPLC chromatogram, mass spectrometry confirmation, and the lot number.