This is a working overview of BPC-157, written for readers who want more than a one-paragraph summary but less than a textbook.
Reviewed 2026-06-24. Anything still debated is marked as such rather than presented as settled.
BPC-157 is a synthetic fifteen-amino-acid peptide whose sequence is GEPPPGKPADDAGLV. Its name derives from the phrase body protection compound, a term applied to a protein fraction originally detected in human gastric juice. The short peptide is not that full protein; it corresponds to a stable fragment of the larger molecule. Researchers frequently describe it as a pentadecapeptide because it contains exactly fifteen residues. Its neutral molecular mass is approximately 1419 daltons.
The sequence places several glycine and proline residues near the middle, which may influence how the chain folds in solution. The peptide is linear rather than cyclic, and it carries no disulfide bridges. Commercial material is commonly supplied as the acetate salt, although the free base and other counterion forms also appear. Because the term BPC-157 refers to a specific sequence, samples with slight sequence variants are chemically different substances. Published work generally treats the fifteen-residue sequence as the defining structure.
Published studies on BPC-157 are dominated by animal models. Commonly used endpoints include healing of surgically induced lesions in the stomach, tendon-to-bone attachment after transection, and recovery from experimentally induced vascular or intestinal damage. Many of these reports come from a small number of research groups, and the peptide is often described as acting across a wide range of tissue types. That breadth is itself a point of discussion, since one molecule influencing many unrelated systems is unusual.
Human data are far more limited than animal data. A small number of clinical reports exist, generally with few participants and without the randomization or blinding expected in later-phase trials. No large, independently replicated human trial has appeared in the indexed peer-reviewed literature. Statements about effects in people therefore rest on extrapolation from animal work rather than on direct evidence, and the strength of that extrapolation remains an open question rather than a settled matter.
| Property | Value | Notes |
|---|---|---|
| Molecular formula | C62H98N16O22 | Approximate, for sequence GEPPPGKPADDAGLV |
| Molecular mass | ~1419 Da | Neutral form |
| Appearance | White to off-white powder | Lyophilized solid |
| Solubility | Soluble in water | Also soluble in aqueous buffers |
| Typical storage | -20 C | Dry powder, protected from moisture |
BPC-157 is a synthetic peptide of fifteen amino acids, written in single-letter code as GEPPPGKPADDAGLV. The sequence corresponds to a partial fragment of a protein isolated from human gastric juice, described in early reports as body protection compound. The number 157 refers to a fragment designation in that work rather than to molecular mass. Initial descriptions appeared in the early 1990s, when the fragment was reported to protect gastrointestinal tissue in animal models. Commercial material is produced by solid-phase peptide synthesis rather than extracted from biological sources.
Laboratory research on this peptide has examined a wide and heterogeneous set of endpoints, including gastric ulcer models, tendon and ligament injury, wound closure, and intestinal inflammation. Most published findings come from rodent studies, and reported effect sizes are often large relative to controls. Because the compound has been tested across many unrelated injury models, the literature is frequently described as unusually broad for a single peptide. A substantial share of this work originates from a small number of research groups, which matters when assessing how widely results have been reproduced.
Identity and purity are established using reversed-phase high-performance liquid chromatography, which separates the peptide from related impurities and yields a percentage purity. Mass spectrometry, typically with electrospray ionization, confirms the molecular mass against the expected value. Amino acid analysis or peptide mapping provides additional sequence confirmation. These methods are complementary, since chromatography measures how much material is present while mass spectrometry verifies what that material is. A certificate of analysis normally reports both.
Analytical results depend on the column, gradient, and detector wavelength chosen by the laboratory, so purity values from different sources are not always directly comparable. Water content, counterion form, and residual trifluoroacetate affect both mass and purity calculations. Microbiological and endotoxin testing are separate from chemical purity and are not covered by a standard chromatographic run. Buyers evaluating a material typically request the full method description rather than a single purity figure.
== Bibliography == Emsley, John (2011). Nature's Building Blocks: An A-Z Guide to the Elements. Oxford University Press. pp. 428–430. ISBN 978-0-19-960563-7. Lavrukhina, Avgusta Konstantinovna; Pozdnyakov, Aleksandr Aleksandrovich (1966). Аналитическая химия технеция, прометия, астатина и франция (Analytical Chemistry of Technetium, Promethium, Astatine, and Francium) (in Russian). Nauka. 2013, E.R. Scerri,A tale of seven elements, Oxford University Press, Oxford, ISBN 9780195391312
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Sources: en.wikipedia.org
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Sources: en.wikipedia.org
The letters BPC stand for body protection compound. The number 157 refers to a specific fragment designation from early work on gastric proteins. The full name is a label for a synthetic fifteen-amino-acid peptide rather than a naturally isolated drug.
No. The gastric protein is larger, while BPC-157 is a short fragment sequence. The peptide is produced synthetically for research use. The relationship is one of sequence origin, not chemical identity.
It is most often supplied as a lyophilized powder, frequently as the acetate salt. The powder is reconstituted with water or a buffer before use. Free-base and other salt forms also exist but are less common in catalogs.
It is not authorized as a medicine in the United States or the European Union. Regulatory treatment varies by jurisdiction, and in several places it is handled as a research chemical. Therapeutic claims are not supported by large human trials.