BPC-157 reconstitution is the lab process of dissolving freeze-dried (lyophilized) BPC-157 powder in bacteriostatic water to make a solution of known concentration. It is a bench technique: the goal is a clean solution whose strength you can calculate. This guide covers the equipment, choosing the water volume, the mixing steps and storage, for researchers working with research-grade BPC-157.
For laboratory research use only. Not for human or veterinary use. Not FDA-approved. The volumes and concentrations below are bench-preparation reference only, not usage instructions.
Key takeaways
- BPC-157 reconstitution = adding bacteriostatic water to lyophilized powder to make a solution of known strength.
- Bacteriostatic water (0.9% benzyl alcohol) is the standard diluent because it inhibits microbial growth in a stored vial.
- The water volume sets the concentration. More water = weaker solution. The milligrams in the vial never change.
- The two most common errors: spraying water onto the powder, and shaking the vial.
What BPC-157 Reconstitution Means
- BPC-157 is supplied as a freeze-dried powder because peptides are far more stable dry than in liquid.
- Reconstitution dissolves that powder into a solution that can be measured and stored.
- The amount of peptide is fixed. Reconstitution only decides how much liquid it is spread across — which sets the concentration.
What You Need
| Item | Role | Note |
|---|---|---|
| Lyophilized BPC-157 vial | The peptide being dissolved | Keep sealed until mixing |
| Bacteriostatic water | The diluent that dissolves the powder | 0.9% benzyl alcohol preservative |
| Calibrated pipette | Measures and transfers the water | Accuracy here sets every later calculation |
| Alcohol swabs | Clean both vial stoppers before opening | One swab per stopper; let it dry |
Bacteriostatic water is preferred over plain sterile or distilled water because its benzyl alcohol inhibits microbial growth, so a reconstituted solution resists contamination in storage.
Choosing the Reconstitution Volume
- Formula: concentration (mg/mL) = peptide in vial (mg) ÷ water added (mL).
- 5 mg vial + 1 mL water = 5 mg/mL. Same vial + 2 mL = 2.5 mg/mL.
- Both vials still hold 5 mg — only the strength per mL differs.
- Round volumes (1 mL or 2 mL) keep the later math simple.
- Concentration math in full: BPC-157 concentration guide.
Step-by-Step Mixing
- Swab both stoppers — the water vial and the peptide vial — and let them air-dry.
- Measure the chosen volume of bacteriostatic water (for example, 2 mL).
- Add it down the glass wall of the peptide vial — never straight onto the powder.
- Let it dissolve on its own. Most BPC-157 goes into solution within a minute or two.
- Swirl, don’t shake. Roll the vial gently if any powder remains. Shaking foams the solution and can damage the peptide.
- Inspect. The solution should be clear and particle-free.
- Label it with concentration, date and batch number.
Concentration Reference Table
| Vial size | Water added | Concentration |
|---|---|---|
| 5 mg | 1 mL | 5 mg/mL |
| 5 mg | 2 mL | 2.5 mg/mL |
| 10 mg | 1 mL | 10 mg/mL |
| 10 mg | 2 mL | 5 mg/mL |
This table describes solution strength only. It is not an amount for use in humans or animals.
Storage After Reconstitution
- Refrigerate at 2–8 °C, away from light.
- Reconstituted peptide is more fragile than dry powder.
- Refrigerated solutions are generally reported stable for around four weeks.
- Avoid freeze-thaw cycles — they degrade peptides in solution.
- Full detail: BPC-157 storage and stability.
Common Reconstitution Mistakes
- Spraying water onto the powder — angle it down the glass instead.
- Shaking the vial — foams the solution and can damage the peptide.
- Skipping the swab — a common cause of contamination in a stored solution.
- Using the wrong water — plain sterile or distilled water has no preservative.
- Not recording the volume — without it, the concentration is unknown and every calculation is wrong.
Frequently Asked Questions
What water is used for BPC-157 reconstitution?
Bacteriostatic water is the standard diluent. Its 0.9% benzyl alcohol inhibits microbial growth, so the solution can be stored. Plain sterile or distilled water lacks that preservative.
How much bacteriostatic water is used for BPC-157 reconstitution?
There is no single required volume. The water sets the concentration: 1 mL in a 5 mg vial gives 5 mg/mL; 2 mL gives 2.5 mg/mL. The milligrams in the vial stay the same.
Should you shake BPC-157 during reconstitution?
No. Shaking foams the solution and can damage the peptide. Add the water down the vial wall, let it sit, and swirl gently if needed.
How long is BPC-157 stable after reconstitution?
Refrigerated at 2–8 °C and kept from light, reconstituted BPC-157 is generally reported stable for about four weeks. This is reported stability data, not a guarantee.
Is BPC-157 FDA-approved?
No. BPC-157 is not FDA-approved for any use. It is sold for laboratory research only.
Research-Grade BPC-157
Accurate reconstitution starts with a well-characterized material. Project Amino supplies BPC-157 synthesized in the US and third-party lab tested, with a certificate of analysis available per batch. For concentration and storage, start from the BPC-157 research handbook.
Important Regulatory Notice
BPC-157 sold by Project Amino is a research chemical for laboratory and research use only. It is not a drug, supplement or medical product, and it is not approved by the FDA. It is not intended for human or veterinary use, or for the diagnosis, treatment, cure or prevention of any disease. All volumes and concentrations are bench-preparation reference for educational purposes only. Purchasers must be 21 or older and are responsible for compliant handling.
