BPC-157: Structure and Research History
What the 15 amino acids are, where the compound came from, and what the published literature does and does not say.
BPC-157 is a pentadecapeptide — a chain of 15 amino acids, written as GEPPPGKPADDAGLV. The name stands for "Body Protection Compound," a reference to its origin as a fragment derived from a larger protective protein found in human gastric juice. Unlike many synthetic research peptides, its sequence is short enough and chemically stable enough that it does not require the modified or non-standard residues that make some peptides difficult to represent in simple one-letter notation.
The research history traces back to 1975, when a medical student in Zagreb, Croatia, named Predrag Sikiric attended a lecture on the body's physiological stress response and reasoned that if stress could damage the stomach lining, the stomach might also produce something that protected it. By 1983 his research group had begun collecting human and animal gastric juice samples to search for that protective factor, and in 1989 they isolated the 15-amino-acid peptide that would become BPC-157. The compound was first formally published in the Journal of Physiology, Paris in 1993.
In the decades since, Sikiric's group and others have published preclinical studies examining BPC-157 across a wide range of rodent injury models — tendon and ligament repair, muscle transection, gut inflammation, and nerve and blood-vessel injury among them — generally reporting accelerated healing markers compared with untreated controls. What this body of literature does not yet include is a completed, published human randomized controlled trial. Nearly everything known about BPC-157 to date comes from in vitro and animal research, which is an important distinction to keep in mind when reading any secondary summary of the compound, including this one.
Sources: Journal of Physiology, Paris, 1993 (Sikiric et al.); see the BPC-157 product page for the full research summary and specific study citations.
This note summarizes published research and general handling practice — it is not medical advice, a dosing recommendation, or a claim about safety or effectiveness for human use. For Research Purposes Only, Not For Human Consumption.
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