What is BPC-157? The 15-residue gastric peptide

BPC-157 is a synthetic peptide of 15 amino acids, built from a partial sequence of a protein found in human gastric juice, and sold in Canada as a lyophilized research chemical rather than a medicine. Its sequence is GEPPPGKPADDAGLV and its molecular weight is 1419.53 g/mol, which is the expected mass on its lab report.

BPC stands for Body Protection Compound, and 157 is a laboratory designation rather than a quantity. It is one of the most widely studied research peptides, mostly in tissue-repair, tendon and gut research models, and it is the compound people ask about most often in this catalog.

What BPC-157 is made of

Fifteen residues in a fixed order, five of them proline. The parent protein survives stomach acid, which is unusual for a peptide of this size, and the 15-residue piece is the stable fragment research settled on. The sequence was first described in the early 1990s by a group in Zagreb, Croatia, and it is made today by solid-phase peptide synthesis, the same route as other research peptides, not extracted from tissue.

That block is the whole identity of the molecule. Every figure on it is a fixed property of the sequence, so it is also what a lab result gets compared against.

Five prolines, and what they change

Five of the fifteen residues are proline, the amino acid whose side chain loops back onto its own backbone and holds it in a kink. A chain with a third of its positions constrained that way is a stiff molecule, and stiffness is part of why the dry powder holds up as well as it does, and why the fragment resists the acid its parent protein lives in. The handling guide carries the concentration table and the rest of the bench numbers for both vial sizes.

The practical result is a short molecule with a single, unambiguous mass-spec target. Expected is 1419.53 g/mol, so an observed reading of 1419.5 or 1419.6 confirms identity. A reading near 1,400 or 1,450 is a different molecule, whatever the purity line above it says.

What BPC-157 is not

Three things come up often enough to answer directly.

It is not a steroid. Steroids are lipids built on a core of four fused carbon rings, and BPC-157 is a straight chain of amino acids. Different class, and a lab report for one looks nothing like a report for the other.

It is not a GLP-1. GLP-1 is a separate peptide hormone, and compounds like semaglutide are designed around its receptor. BPC-157 shares neither the sequence nor the receptor target. BPC-157 in Canada sets the three side by side, molecule by molecule.

Approval is a separate question. There is no FDA-approved BPC-157 product and no Health Canada registration for one, which is why every vial sold here is supplied as a research chemical for laboratory work. Is BPC-157 FDA approved? explains why approval attaches to a drug product rather than to a molecule, and are research peptides legal in Canada covers how the category is treated. For the legal picture specifically, this page is general information, not legal advice.

BPC-157 as it is sold

It ships as a sealed vial of lyophilized powder, alone or combined with TB-500.

The pairing is common enough in tissue-repair research that the two are also filled together, which is where the nickname "wolverine stack" comes from. BPC-157 vs TB-500 compares the two molecules, what a peptide blend is covers the combined format, and peptide blends vs single vials sets out what each route costs you in flexibility. TB-500 has its own numbers, and the TB-500 handling guide has them.

How a BPC-157 vial is checked

A name on a label proves nothing, since any supplier can print one. The report for the vial in hand is the check, and on BPC-157 it comes down to four lines:

• Observed mass near 1419.5 g/mol, printed next to the expected value
• HPLC purity at 99% or higher, the release spec every batch we ship has to meet
• A batch number that matches the code on the vial
• A named, independent lab, with a test date later than the fill date

How to read a peptide lab report walks through each field. A blend vial is checked the same way with one extra line: the report states the ratio of the two components for that batch. Every pepuro vial carries a QR code that opens the third-party report for its own batch, and any batch code can be typed into the tracking page instead.

Every BPC-157 vial from pepuro ships free from our Calgary, Toronto and Vancouver distribution centers, dispatched the same business day your e-Transfer clears, with a QR code on the vial that opens its independent, third-party lab report.

For research use only. Not for human or animal consumption.