BPC-157 (Body Protection Compound 157)

BPC-157 is a synthetic pentadecapeptide, a chain of 15 amino acids with the sequence Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val. The sequence is derived from a larger protective protein identified in human gastric juice, which is where the name Body Protection Compound comes from. In published research it is described as a stable gastric pentadecapeptide, meaning it holds together in gastric acid where many peptides break down.

Researchers most often encounter BPC-157 in tissue-repair model systems involving tendon, muscle, ligament, and the gastrointestinal lining. It is supplied as a lyophilized (freeze-dried) white powder for laboratory reconstitution. The compound carries CAS number 137525-51-0 and the molecular formula C62H98N16O22, with a molecular weight of 1419.5 g/mol.

Interest in BPC-157 traces back to work on gastric mucosal protection at the University of Zagreb in Croatia, where a research group associated with Predrag Sikiric began characterizing the peptide in the 1990s. Early literature framed it around the stomach, then widened to musculoskeletal and vascular models.

A 2019 review by Gwyer, Wragg and Wilson in Cell and Tissue Research examined BPC-157 and its reported role in accelerating musculoskeletal soft tissue healing in animal models (PubMed 30915550). A 2025 literature and patent review by Jozwiak and colleagues in Pharmaceuticals catalogued the breadth of preclinical work and patent activity around the compound (PubMed 40005999). A 2025 systematic review in the HSS Journal by Vasireddi and colleagues looked specifically at how BPC-157 is appearing in orthopaedic sports medicine discussion (PubMed 40756949).

Worth stating plainly: the bulk of this work sits in animal and in-vitro models. Large, controlled human clinical trials remain limited in the published record, and researchers should weigh findings with that in mind.

Research describes BPC-157 as acting on several repair-related pathways rather than a single receptor. Reported mechanisms in laboratory models include interaction with the nitric oxide system, promotion of angiogenesis (the formation of new blood vessels), and modulation of growth factor signaling such as the VEGFR2 pathway. Some tendon-fibroblast studies also describe effects on the FAK-paxillin pathway.

A practical distinction for researchers: BPC-157 is frequently studied alongside TB-500, but the two are structurally unrelated. BPC-157 is a short 15-amino-acid sequence from a gastric protein, while TB-500 relates to the much larger thymosin beta-4 protein. They are sometimes examined together in repair-model studies, which is why some suppliers offer combination formats.

Methodology matters when reading this literature. Most published findings come from rodent injury models and cell culture, and dosing, delivery route, and model design vary widely between papers, so results are not directly comparable. Researchers tracking current findings should search PubMed directly for the newest peer-reviewed work.

Lyophilized BPC-157 is stored at -20°C for long-term holding, shielded from light, and repeated freeze-thaw cycles are avoided. Stability for a given lot is documented on its Certificate of Analysis. Short holding at 2°C to 8°C is workable while the vial stays sealed and is protected from light and moisture.

Repeated freeze-thaw cycles are avoided because they can degrade peptide integrity. Stability figures vary by manufacturer, purity, and buffer, so the Certificate of Analysis for a given lot is the correct reference for that specific material.

Reconstitution means returning a lyophilized compound to solution. This page gives no preparation procedure: solvent, concentration and handling steps belong to the methodology of the study being reproduced, not to a compound reference. BPC-157 is handled as aqueous-soluble material.

Lyophilized material is hygroscopic, so a sealed container is allowed to reach ambient temperature before it is opened. Solubility and water-content figures for a given lot appear on its Certificate of Analysis.

Identity and purity of research-grade BPC-157 are established analytically, by HPLC with mass spectrometric confirmation of the expected mass. Verified purity is documented per lot on the Certificate of Analysis. Mass spectrometry is used to confirm the molecular weight of 1419.5 g/mol and therefore the identity of the peptide.

A Certificate of Analysis should accompany each lot. Useful items to check on a COA include the HPLC purity figure, the mass-spec identity confirmation, the net peptide content, and any notes on residual solvents or endotoxin where relevant. peptides.com publishes lot-specific lab reports for this reason. Buyers comparing sources should look for analytical documentation rather than purity claims stated without supporting data.

BPC-157 is most often cross-referenced with other repair-context and regenerative research peptides:

• TB-500 (Thymosin Beta-4).
  Frequently studied in the same soft-tissue repair models and offered in combination formats. 
• GHK-Cu (Copper Tripeptide-1).
  A separate regenerative-context peptide studied in skin and matrix-remodeling models. 
• Thymosin Alpha-1.
  A thymus-derived peptide studied in immune-context research (entry forthcoming in this encyclopedia).
• KPV.
  A short tripeptide studied in inflammation-model research (entry forthcoming).

Gwyer D, Wragg NM, Wilson SL (2019). Gastric pentadecapeptide body protection compound BPC 157 and its role in accelerating musculoskeletal soft tissue healing. Cell and Tissue Research.
PubMed 30915550

Jozwiak M, Bauer M, Kamysz W, et al. (2025). Multifunctionality and Possible Medical Application of the BPC 157 Peptide: Literature and Patent Review. Pharmaceuticals (Basel).
PubMed 40005999

Vasireddi N, Hahamyan H, Salata MJ, et al. (2025). Emerging Use of BPC-157 in Orthopaedic Sports Medicine: A Systematic Review. HSS Journal.
PubMed 40756949

Lee E, Padgett B (2021). Intra-Articular Injection of BPC 157 for Multiple Types of Knee Pain. Alternative Therapies in Health and Medicine.
PubMed 34324435

peptides.com carries BPC-157 in research-grade formats from multiple brands, including lyophilized vials (commonly 5mg and 10mg) and capsule formats. All products ship with batch-specific Certificates of Analysis verifying purity and chemical identity.

• Browse all BPC-157 research products
• Real Peptides BPC-157 (10mg vial)
• Catalyst Compounds BPC-157 (5mg to 10mg vial)
• Catalyst Compounds BPC-157 Capsules
• BPC-157 + TB-500 combination (Wolverine Blend)
• Collections: Research Vials and Capsules & Tablets. Documentation: COA and Lab Testing.

These products are sold for Research Use Only and are not intended for human consumption.