How to Reconstitute BPC-157: Step-by-Step Guide (2026)
BPC-157 reconstitution guide: 2mL BAC water into a 5mg vial = 10 units per 250mcg dose. Dilution charts, storage, and mistakes to avoid.
How to Reconstitute BPC-157
You ordered your first vial of BPC-157 and now you're staring at a tiny bottle of white powder wondering what to do next. Don't worry — reconstitution sounds technical but it's straightforward once you understand the basics.
This guide walks you through mixing, measuring doses, and storing your peptide so nothing goes to waste.
What You Need
Before you start, gather everything:
- BPC-157 lyophilized vial (typically 5mg or 10mg)
- Bacteriostatic water (BAC water) — not sterile water, not saline
- Insulin syringes — 1mL (100 unit), 29-31 gauge
- Alcohol swabs — for cleaning vial tops
- A clean, flat workspace
Why bacteriostatic water? It contains 0.9% benzyl alcohol that prevents bacteria from growing in your solution. Regular sterile water has no preservative, so the vial must be used within 24 hours. BAC water gives you up to 28 days refrigerated.
Step-by-Step Reconstitution
Step 1: Clean Everything
Wipe the tops of both vials (BPC-157 and BAC water) with alcohol swabs. Let them air dry for 10 seconds. This prevents contamination — skip it at your own risk.
Step 2: Draw Your Bacteriostatic Water
Using a fresh insulin syringe, draw your desired amount of BAC water. The amount you add determines your concentration (see the dilution charts below).
For most people, 2mL into a 5mg vial is the sweet spot. It gives clean, round numbers for standard doses.
Step 3: Add Water to the Peptide Vial
Insert the needle into the BPC-157 vial at an angle, aiming at the glass wall — not directly at the powder. Let the water trickle down the side of the vial gently.
Do not squirt water directly onto the powder. Peptides are fragile. Aggressive mixing can damage the molecular structure and reduce potency.
Step 4: Let It Dissolve
Gently swirl the vial with a slow rotating motion. Do not shake it. The powder should dissolve within 1-2 minutes into a perfectly clear, colorless solution.
If particles remain after 5 minutes of gentle swirling, the peptide may be degraded. A properly manufactured BPC-157 dissolves easily.
Step 5: Store Correctly
Refrigerate immediately at 36-46°F (2-8°C). The reconstituted solution is stable for up to 28 days with bacteriostatic water.
Dilution Charts
5mg Vial
| BAC Water Added | Concentration | 250mcg Dose | 500mcg Dose |
|---|---|---|---|
| 1mL | 5,000mcg/mL | 5 units (0.05mL) | 10 units (0.1mL) |
| 2mLRecommended | 2,500mcg/mL | 10 units (0.1mL) | 20 units (0.2mL) |
| 2.5mL | 2,000mcg/mL | 12.5 units (0.125mL) | 25 units (0.25mL) |
10mg Vial
| BAC Water Added | Concentration | 250mcg Dose | 500mcg Dose |
|---|---|---|---|
| 2mLRecommended | 5,000mcg/mL | 5 units (0.05mL) | 10 units (0.1mL) |
| 3mL | 3,333mcg/mL | 7.5 units (0.075mL) | 15 units (0.15mL) |
| 4mL | 2,500mcg/mL | 10 units (0.1mL) | 20 units (0.2mL) |
Why 2mL? It gives you clean, round numbers for standard doses — easy to measure, hard to mess up.
The Math (So You Can Do It Yourself)
Here's the formula for any vial size and any amount of water:
Concentration = Peptide Amount (mcg) ÷ Water Added (mL)
Then to find your injection volume:
Units to inject = Desired Dose (mcg) ÷ Concentration (mcg/mL) × 100
Example: 5,000mcg vial + 2mL water = 2,500mcg/mL. For a 250mcg dose: 250 ÷ 2,500 × 100 = 10 units.
Don't want to do math? Use our Reconstitution Calculator — plug in your vial size, water amount, and desired dose, and it does the rest.
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Common Mistakes
Shaking the Vial
Peptides are proteins. Shaking creates foam, which means air bubbles trapped against peptide molecules. This can denature (destroy) the peptide at the air-liquid interface. Always swirl gently.
Using Too Little Water
Adding 0.5mL to a 5mg vial gives you 10,000mcg/mL. That means a 250mcg dose is only 2.5 units — nearly impossible to measure accurately on an insulin syringe. The tiny tick marks become your enemy. Use at least 1mL, ideally 2mL.
Leaving It at Room Temperature
Reconstituted BPC-157 degrades rapidly above refrigerator temperature. Every hour at room temperature reduces potency. Pull the vial out, draw your dose, put it back. Don't leave it on the counter while you prep.
Reusing Needles
Each puncture through the rubber stopper dulls the needle and increases contamination risk. Fresh syringe every time — they cost pennies.
Freezing Reconstituted Peptide
Freezing a liquid peptide solution creates ice crystals that can shear the peptide bonds apart. Only freeze lyophilized (powder) peptides. Once reconstituted, refrigerate — never freeze.
How Many Doses Per Vial?
This depends on your dose and how much water you added:
5mg vial at 250mcg/dose = 20 doses 5mg vial at 500mcg/dose = 10 doses 10mg vial at 250mcg/dose = 40 doses 10mg vial at 500mcg/dose = 20 doses
At a standard protocol of 250mcg twice daily, a 5mg vial lasts 10 days. A 10mg vial lasts 20 days.
Storage Quick Reference
| State | Temperature | Shelf Life |
|---|---|---|
| Lyophilized (powder) | Room temp | 6-12 months |
| Lyophilized (powder) | Refrigerated | 2+ years |
| Lyophilized (powder) | Frozen (-20°C) | 3+ years |
| Reconstituted (BAC water) | Refrigerated | Up to 28 days |
| Reconstituted (sterile water) | Refrigerated | Use within 24 hours |
Pro tip: If you buy multiple vials, keep unopened ones in the freezer and only reconstitute what you'll use within 3-4 weeks.
Related Reading
- BPC-157 Dosing Guide — protocols, injection sites, and cycling
- BPC-157 Bloodwork Guide — what labs to track and optimal ranges
- BPC-157 Benefits — what the research shows
- Wolverine Stack: BPC-157 + TB-500 — the classic healing combo
- TB-500 Dosing Guide — often stacked with BPC-157
- GHK-Cu Dosing Guide — another regenerative peptide for tissue repair
References
- Chang, C.H., et al. (2014). Pentadecapeptide BPC 157 enhances the growth hormone receptor expression in tendon fibroblasts. Molecules, 19(11), 19066-19077. PMC6271067
- Seiwerth, S., et al. (2018). BPC 157's effect on healing. Journal of Physiology-Paris, 112(1), 1-10.
- USP General Chapter 797: Pharmaceutical Compounding — Sterile Preparations. Storage and beyond-use dating guidelines for reconstituted peptides.
This guide is for educational and informational purposes only. It is not medical advice. BPC-157 is sold as a research compound and is not FDA-approved for human use. Reconstituting and self-administering peptides carries inherent risks including infection, contamination, and dosing errors. Always use proper sterile technique. Consult a qualified healthcare provider before starting any peptide protocol. The Peptide Catalog is not responsible for any adverse effects resulting from the use or misuse of information presented here.