Every BPC-157 (Pentadecapeptide) Question Answered, in 25 Studies

25 referenced articles

• Is Oral BPC-157 Absorbed? What the Rat Data Shows3 sources
• Why BPC-157 and TB-500 Are Called the Wolverine Stack3 sources
• Is BPC-157 Legal?2 sources
• What BPC-157 Is Claimed to Do, and in Which Species3 sources
• BPC-157 Side Effects and the Absence of Human Data2 sources
• What Is BPC-157? Origin, Sequence and Evidence4 sources
• BPC-157 Studied Effects, Sorted by Evidence4 sources
• Growth Factor Signalling in the BPC-157 Literature3 sources
• Tendon and Ligament Models3 sources
• BPC-157 and Blood Vessels3 sources
• BPC-157 Mechanism: Why It Is Described as Multi-Pathway3 sources
• BPC-157 Storage, Stability and Reconstitution3 sources
• The Stability Claim, Examined3 sources
• The Gastric Juice Origin3 sources
• Body Protection Compound: A Name That Is a Hypothesis3 sources
• What Does BPC-157 Stand For?2 sources
• Pentadecapeptide: The Word and What It Tells You2 sources
• BPC-157 Molecular Structure and Physical Properties2 sources
• The Proline Problem in BPC-157 Synthesis2 sources
• BPC-157 Structure and Sequence2 sources
• BPC-157 vs TB-500 Compared4 sources
• BPC-157 Molecular Weight: 1419.5 Da2 sources
• BPC-157 CAS Number and Chemical Identity2 sources
• The Zagreb Research Programme4 sources
• BPC-157 in the Published Literature4 sources

Open research questions

• What does BPC-157 stand for?
• Is BPC-157 the same as pentadecapeptide?
• Who discovered BPC-157?
• What is the difference between BPC-157 acetate and arginate?
• How is BPC-157 reconstituted for research?

Deep dive: the pentadecapeptide sequence

BPC-157 is a synthetic pentadecapeptide with the sequence Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val. It is derived from a fragment identified in human gastric juice by the Zagreb research group (Sikirić and colleagues), whose body of published work spans three decades and covers models ranging from tendon repair to gut integrity. The 'BPC' initials stand for 'body protection compound' — the group's original characterisation term.

Two forms: acetate salt vs arginate

BPC-157 is supplied most commonly as an acetate salt; a small subset of suppliers offer the arginate form, which has slightly different solubility and stability properties. For research reproducibility, keep the salt form consistent across a study and confirm which form the CoA specifies (mass ± counterion changes the reading).

Reading a BPC-157 CoA

A trustworthy BPC-157 CoA lists HPLC purity (target ≥98% area), mass-spec confirmation (~1,419 Da for the free peptide), water content (Karl Fischer), acetate content, and residual solvents. Some batches also include endotoxin data. Any missing category is a red flag for a compromised supply chain.

Handling checklist

• Store lyophilised vial at −20 °C long-term (2–8 °C short-term)
• Reconstitute with bacteriostatic water; a 5 mg vial dissolves cleanly
• Aliquot reconstituted solution; keep refrigerated 2–8 °C, use within 28 days
• Protect from light and repeated warming
• Verify CoA: HPLC ≥98%, mass ~1,419 Da, salt form declared

Common mistakes

Mixing acetate and arginate BPC-157 across a study

Choose one salt form and stay with it — different masses and solubility.

Assuming stability at room temperature

Refrigerate reconstituted solution; discard after 28 days.

Buying without a CoA

Only source from suppliers that publish batch HPLC + mass-spec data.