In this article
BPC-157 is a lab-made peptide (a short chain of protein building blocks) made up of 15 amino acids. It is studied in tissue-repair research. It is not approved by any drug regulator for use in people.
BPC-157
What it is
BPC-157, short for Body Protection Compound 157, is a synthetic (lab-made) peptide. A peptide is a short chain of amino acids, which are the small building blocks that link together to form proteins. BPC-157 has exactly 15 amino acids in its chain.
Its sequence is based on part of a protein found in human stomach juice. The compound is made entirely in a lab. It is not extracted from living tissue.
Research context and categorization
BPC-157 is placed in the healing and tissue-repair category of research peptides.
Published studies have looked at it in lab models of wounds, tendons, ligaments, muscles, and bones. It has also been studied in models of gut injury, bowel inflammation, new blood vessel growth (called angiogenesis), and cell protection in internal organs.
Key point: Almost all research on BPC-157 has been done in animals, not people. Its reported effects are not confirmed or approved for humans.
Most of this research comes from animal studies, mainly in small rodents. Much of it also comes from a small number of research groups. Human evidence is very limited.
These uses are investigational (still being studied and not yet proven). The reported effects are not confirmed or approved outcomes in people. Nothing here should be read as an established benefit.
Status
- Regulatory status: Research-only. BPC-157 is not approved by the FDA, or by any other drug regulator, for any use in people. It is not a recognized dietary ingredient. Regulators have flagged it as an unapproved drug substance with unresolved safety and characterization questions.
- Sport status: Prohibited under the WADA Prohibited List (the global anti-doping rules for sport). BPC-157 falls under class S0 (Non-Approved Substances) and is banned at all times, both in and out of competition. It is also classed as a Specified Substance. Anti-doping bodies have stated that a Therapeutic Use Exemption (a special medical permit) would not be granted for it. Athletes have been sanctioned over products containing it.
Reconstitution notes (general)
Lyophilized (freeze-dried) peptides are mixed with bacteriostatic water before lab use. Bacteriostatic water is simply water with a small amount of preservative added to stop bacteria from growing in the vial.
Working out the concentration is straightforward. Think of it like a drink mix: concentration equals the amount of peptide (in milligrams) divided by the amount of water added (in millilitres). For example, 5 mg of powder mixed into 2 mL of water gives a concentration of 2.5 mg/mL.
A reconstitution calculator is available at peptide calculator to check the math for a given vial and fill volume.
Dilution and handling notes (compound-specific)
BPC-157 comes as a freeze-dried powder, usually in 5 mg or 10 mg vials. It is mixed with water before lab use.
Most researchers use roughly 1 mL to 3 mL of water per vial. For example, about 2 mL into a 5 mg vial gives 2.5 mg/mL. About 3 mL into a 10 mg vial gives roughly 3.3 mg/mL.
The amount of water chosen depends on what concentration the researcher needs for accurate small-volume measurements. More water makes a more dilute solution that is easier to measure in tiny increments. Less water makes a more concentrated solution in a smaller volume. Think of it like mixing juice from concentrate: you can add more or less water depending on the strength you want.
Mixing and Solubility
In practice, BPC-157 powder dissolves in water easily and fully within a few minutes. The result is a clear, colorless liquid.
The powder behaves well and does not tend to clump or form solid bits (called precipitate) at normal working concentrations. A solution that stays cloudy, has floating bits, or changes color after mixing is a sign that something has gone wrong. That is not a normal result.
Handling Best Practices
To help the powder dissolve cleanly, add water slowly down the inside glass wall of the vial. Do not squirt it directly onto the powder cake.
Swirl the vial gently rather than shaking it. Shaking creates foam, and where air meets the liquid surface, peptide molecules can break down. After mixing, check that the solution is fully clear before lab use. Keep the vial out of direct light.
Handling and storage
To keep reconstituted BPC-157 stable, follow these storage guidelines:
- Store the reconstituted vial in a refrigerator at 2 to 8 degrees Celsius and keep it out of light.
- Wipe the rubber stopper with an alcohol swab before each puncture.
- Label the vial with the date it was mixed so its age can be tracked.
- A refrigerated working window of roughly four weeks (about 28 days) is commonly cited for solutions made with bacteriostatic water.
- Discard any vial that becomes cloudy or discolored, or that shows floating bits or particles.
Related reading
Tools and supplies
- peptide calculator
- Bacteriostatic Water 30 ml
- Gansulin Metal Reusable Pen
- 3 ml Glass Cartridges (10-pack)
- Complete Starter Kit
Reminder: research and educational reference only. Preppin Peppers sells hardware and materials, not peptides. Not medical, dosing, or health advice, not evaluated by the FDA, and not intended for human or animal use.
Frequently asked questions
What is BPC-157 and how is it made?
BPC-157 is a synthetic 15-amino-acid peptide whose sequence derives from a human gastric protein. It is produced entirely in a laboratory and is not extracted from living tissue.
How do you reconstitute lyophilized BPC-157 for lab use?
Add bacteriostatic water to the vial (e.g., 2 mL into a 5 mg vial yields 2.5 mg/mL). Inject water slowly down the vial wall, then swirl gently until the powder fully dissolves. Do not shake.
What is the regulatory and sport status of BPC-157?
BPC-157 is not FDA-approved for human use and is classed as an unapproved drug substance. It is banned under WADA's S0 (Non-Approved Substances) category at all times, in and out of competition.
What the research community gets wrong about BPC-157
- Treating it as a natural body peptide. The full 15-amino-acid sequence is not found in the body. It is a lab-made fragment based on part of a stomach protein, and it is synthesized in a lab rather than pulled from tissue.
- Assuming the evidence is mostly human. Nearly all published work sits in animal models (mostly rodents), and much of it comes from a small number of research groups. Human bench data is very limited, so results should be read as investigational.
- Thinking the powder is fragile or hard to dissolve. At normal working concentrations it goes into solution quickly and gives a clear, colorless liquid. Foaming and surface breakdown usually come from shaking the vial, not from the peptide itself.
- Confusing dry-powder stability with solution stability. The freeze-dried powder is stable, but once it is mixed with bacteriostatic water it becomes a liquid that should be refrigerated and tracked by mix date. Dry-storage data does not carry over to the wet vial.
- Reading FDA Category 2 changes as approval. Moving on or off a compounding review list is a procedural step, not a drug approval. At the bench it remains an unapproved substance and is banned in sport under WADA class S0.
From our bench: If you have reconstituted a BPC-157 vial with bacteriostatic water, we would value your real numbers. How many minutes did the powder take to fully clear after you ran the water down the inner glass wall and swirled? Did the solution stay clear across your refrigerated working window, or did you log any cloudiness or floating particles, and on which day? Send your recorded observations and we may add them here with credit.
Sources
- Bacteriostatic Water for Injection, USP , FDA/DailyMed label (0.9% benzyl alcohol)
- Duerkop et al., Biotechnol J 2018 , Impact of Cavitation, High Shear Stress and Air/Liquid Interfaces on Protein Aggregation
- Sigma-Aldrich (Merck) , Handling and Storage Guidelines for Peptides and Proteins
- PubChem CID 9941957: BPC-157 (compound record, C62H98N16O22)
- Seiwerth et al., Stable Gastric Pentadecapeptide BPC 157 and Wound Healing, Frontiers in Pharmacology, 2021 (PMC8275860)
- Sikiric et al., The Stable Gastric Pentadecapeptide BPC 157 Pleiotropic Beneficial Activity, Pharmaceuticals (Basel), 2024 (PMC11053547)
✔ Reviewed by Bryan Le, PharmD, RPh
Bryan is a licensed pharmacist (Doctor of Pharmacy, Registered Pharmacist). Reconstituting lyophilized preparations is core pharmacy practice, so he reviews The Lab’s content for technical accuracy and to keep it within a research-and-education scope, with no medical or dosing advice. View profile on LinkedIn.
