BPC-157 Frequently Asked Questions

BPC-157, or Body Protection Compound-157, is a synthetic pentadecapeptide consisting of 15 amino acids. It is derived from a partial sequence of a protein naturally present in human gastric juice known as Body Protection Compound. The peptide was first isolated and characterized by researchers studying gastric mucosal protection.

The amino acid sequence of BPC-157 is: Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val. Its molecular formula is C62H98N16O22, and it has a molecular weight of approximately 1419.53 Daltons. The CAS registry number is 137525-51-0.

What makes BPC-157 particularly notable in peptide research is its remarkable stability in acidic environments. Unlike most peptides, which degrade rapidly in gastric conditions, BPC-157 retains its structural integrity in highly acidic pH levels, a property attributed to its origin as a gastric peptide fragment. This acid stability has made it a subject of interest not only in tissue repair research but also in oral peptide delivery studies.

BPC-157 is supplied as a white lyophilized powder and is available at Pepspan in 5mg vials, as well as in oral capsule form and as part of the Wolverine Blend.

BPC-157 is one of the most extensively studied peptides in the field of tissue repair and regeneration research. Published studies, primarily conducted in animal models and in vitro systems, have investigated its effects across a wide range of biological processes:

• Tissue repair: Studies have examined BPC-157's effects on the healing of tendons, muscles, ligaments, bones, and skin in animal models, with results suggesting accelerated repair processes.
• Gastrointestinal protection: As a gastric-derived peptide, BPC-157 has been studied for its cytoprotective effects on gastrointestinal mucosa, including studies on gastric ulcers, inflammatory bowel conditions, and intestinal anastomosis healing.
• Angiogenesis: Research has investigated BPC-157's role in promoting the formation of new blood vessels (angiogenesis), which is a critical component of tissue repair.
• Growth factor modulation: In vitro studies have shown that BPC-157 may influence the expression of growth factors including VEGF (Vascular Endothelial Growth Factor) and EGF (Epidermal Growth Factor).
• Nitric oxide (NO) system: Several studies have explored BPC-157's interactions with the nitric oxide signaling pathway, suggesting it may modulate NO production in various tissue contexts.
• Anti-inflammatory effects: Research has examined BPC-157's potential to modulate inflammatory responses in both acute and chronic inflammation models.

It is important to note that all published research on BPC-157 has been conducted in animal models or in vitro systems. There are no completed, published human clinical trials for BPC-157 to date. For related research reading, see our BPC-157 Europe Guide.

BPC-157 is a linear pentadecapeptide (15-amino acid peptide) with a well-characterized molecular structure:

• Amino acid sequence: Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val
• Molecular formula: C62H98N16O22
• Molecular weight: 1419.53 Da (Daltons)
• CAS number: 137525-51-0
• Isoelectric point: Approximately 4.2 (slightly acidic)

The peptide's structure features a high proportion of proline residues (three consecutive prolines at positions 3-5), which contributes to its structural rigidity and unusual stability. The presence of multiple proline residues also contributes to BPC-157's resistance to enzymatic degradation, particularly by proteases that cleave peptide bonds adjacent to standard amino acid residues.

BPC-157 lacks disulfide bonds (no cysteine residues) and does not require a carrier protein for its biological activity in research models. Its structural simplicity compared to larger proteins makes it amenable to efficient solid-phase peptide synthesis, contributing to its availability in high-purity research-grade form.

Proper storage of BPC-157 is essential for maintaining peptide integrity and ensuring reliable research results. Storage conditions depend on the form of the peptide:

Lyophilized (freeze-dried) BPC-157:

• Long-term storage: -20 degrees Celsius (standard laboratory freezer). At this temperature, lyophilized BPC-157 remains stable for years with no significant degradation.
• Short-term storage: 2-8 degrees Celsius (refrigerator). Acceptable for storage periods of up to several months.
• Room temperature: Lyophilized BPC-157 is stable at room temperature for short periods (days to weeks), including during shipping transit. However, prolonged room temperature storage is not recommended.

Reconstituted BPC-157:

• Store at 2-8 degrees Celsius immediately after reconstitution.
• Use within 2-4 weeks for best results.
• For longer storage, prepare aliquots and freeze at -20 degrees Celsius. Each aliquot should be thawed once and used; avoid repeated freeze-thaw cycles.

In all cases, keep BPC-157 protected from direct light and moisture. When removing a frozen vial for use, allow it to equilibrate to room temperature before opening to prevent condensation from entering the container.

For reliable research results, BPC-157 should have a purity of at least 98% as determined by HPLC (High-Performance Liquid Chromatography) analysis. This is the standard expected for high-quality research-grade peptides.

Purity in this context refers to the percentage of the target BPC-157 peptide (with the correct 15-amino acid sequence) relative to the total content of the sample. The remaining fraction (typically less than 2%) may consist of synthesis-related impurities such as truncated sequences (shorter versions of the peptide missing one or more amino acids), deletion sequences, oxidized forms, or residual reagents from the synthesis process.

A higher purity level reduces the risk that impurities will interfere with experimental results or introduce confounding variables. For most in vitro research applications, >98% purity provides a reliable starting material. For particularly sensitive assays, researchers may perform additional purification steps in their own laboratory.

All BPC-157 supplied by Pepspan meets or exceeds the >98% purity standard, with each batch independently verified by HPLC and mass spectrometry as documented in the accompanying Certificate of Analysis.

Yes, BPC-157 is available in an oral capsule formulation specifically designed for oral bioavailability and gastrointestinal research. Pepspan offers BPC-157 Oral capsules as part of its product catalogue.

The viability of an oral BPC-157 formulation is rooted in the peptide's exceptional acid stability. Unlike most peptides, which are rapidly degraded by gastric acid and digestive enzymes in the stomach, BPC-157 originates from a protein found in human gastric juice and retains structural integrity in highly acidic environments (pH 1-2). This property, demonstrated in stability studies, makes BPC-157 one of the few peptides considered viable for oral delivery in research contexts.

Oral BPC-157 research is particularly relevant for studies investigating gastrointestinal effects, as oral delivery places the peptide directly in contact with the GI mucosa. Research in animal models has examined oral BPC-157 in the context of gastric ulcer protection, intestinal inflammation, and GI tract integrity.

The oral form is distinct from the injectable lyophilized form (BPC-157 5mg vial) and is intended for different research protocols.

The Wolverine Stack, also marketed as the Wolverine Blend, is a research formulation combining two peptides in a single lyophilized vial: BPC-157 (10mg) and TB-500 (10mg, a fragment of Thymosin Beta-4).

The name "Wolverine Stack" originates from the research community's interest in the combined regenerative properties of these two peptides. BPC-157 and TB-500 are studied for their respective roles in tissue repair through different but potentially complementary mechanisms:

• BPC-157 is researched for its effects on growth factor modulation (VEGF, EGF), nitric oxide system interactions, and tissue repair signaling.
• TB-500 (Thymosin Beta-4 fragment) is a 43-amino acid peptide studied for its role in actin regulation, cell migration, wound healing, and anti-inflammatory signaling.

The rationale for combining them in a single research formulation is to facilitate studies examining whether these peptides exhibit synergistic effects when present together, particularly in tissue repair models. Published research has studied each peptide individually, and the combination product allows researchers to investigate potential additive or synergistic interactions.

The Wolverine Blend is supplied at a combined 20mg total peptide content (10mg BPC-157 + 10mg TB-500) in a single vial, with COA verification for both components. For more information, see our Wolverine Stack research article.

Reconstituting BPC-157 from its lyophilized form into solution is a simple process. Follow these steps for best results:

Materials needed:

• BPC-157 lyophilized vial (e.g., 5mg vial from Pepspan)
• Bacteriostatic water (sterile water with 0.9% benzyl alcohol)
• Appropriately sized syringe with needle
• Alcohol swabs

Procedure:

• 1. If the BPC-157 vial has been stored frozen, allow it to reach room temperature before opening. This prevents condensation.
• 2. Clean the rubber stoppers of both the BPC-157 vial and the bacteriostatic water vial with alcohol swabs.
• 3. Draw the desired volume of bacteriostatic water into the syringe. For a 5mg vial, using 2ml of bacteriostatic water produces a concentration of 2.5mg/ml (2500mcg/ml).
• 4. Insert the needle through the BPC-157 vial stopper and slowly release the water along the inside wall of the vial. Do not direct the stream onto the lyophilized powder.
• 5. Allow the peptide to dissolve on its own. This typically takes 1-3 minutes. If needed, gently roll the vial between your palms. Never shake or vortex.
• 6. The resulting solution should be clear and colorless. If it appears cloudy or contains particles, do not use it.
• 7. Store the reconstituted solution at 2-8 degrees Celsius and use within 2-4 weeks.

For researchers in Europe, Pepspan offers BPC-157 5mg lyophilized vials shipped directly from Europe to all EU member states. Pepspan is an EU-based supplier, which provides several advantages for European researchers:

• No customs or import duties: Shipping within the EU single market means no border delays, customs inspections, or additional taxes.
• Fast delivery: 2-5 business days to any EU member state via tracked shipping.
• Free shipping: On all orders over EUR 100.
• COA verified: Every batch is tested by an independent third-party laboratory for purity (HPLC, >98%) and identity (mass spectrometry).
• cGMP certified supplier: Peptides are manufactured under pharmaceutical-grade quality protocols.

When selecting a peptide supplier in Europe, key factors to evaluate include: whether third-party COAs are provided for each batch, the purity threshold guaranteed, the manufacturing standards (cGMP vs. non-certified), shipping location (EU-based avoids customs risk), and reputation through verified customer reviews. Pepspan is rated 4.9/5 on Trustpilot based on 374 verified reviews.

BPC-157 is also available from Pepspan in oral capsule form and as part of the Wolverine Blend (combined with TB-500).

COA-verified means that the specific batch of BPC-157 you purchase has been analytically tested by an independent, accredited laboratory, and the results have been documented in a formal Certificate of Analysis (COA). This is distinct from suppliers who may only provide a generic or sample COA that does not correspond to your actual batch.

For BPC-157, a comprehensive COA typically includes:

• HPLC purity analysis: Confirms the peptide purity exceeds the stated threshold (>98% for Pepspan products). The HPLC chromatogram shows the target BPC-157 peak and any minor impurity peaks, allowing you to see the exact purity percentage.
• Mass spectrometry (MS) data: Confirms the molecular weight of the peptide matches the expected value for BPC-157 (approximately 1419.53 Da). This verifies that the correct amino acid sequence was synthesized.
• Batch number: Links the analytical results to the specific production batch from which your product was taken.
• Testing date: Indicates when the analysis was performed.
• Laboratory identification: Identifies the independent laboratory that conducted the testing.

COA verification provides objective, third-party evidence that the BPC-157 you receive is authentic, correctly identified, and meets the stated purity standard. It is the single most important quality indicator when purchasing research peptides. Learn more about peptide quality standards in our Peptide Quality Guide.