BACWater& Co.
Calculator

Reconstitution Calculator

Enter your peptide, vial size, dose, and syringe type. We'll calculate exactly how much BAC water to add, how many syringe units to draw, and how many doses you'll get per vial.

Want a guided, step-by-step walkthrough instead? Try the plan builder.

Step 1 · of 6

Which peptide are you mixing?

Pick from the list. If yours isn't there, choose Other.

Step 2 · of 6

What size is your vial?

Common sizes for BPC-157. Look at the number printed on the label.

Step 3 · of 6

How much do you want per injection?

Typical range: 200–500 mcg.

Step 4 · of 6

Which syringe are you using?

A 1 mL insulin syringe works for almost everyone. Not sure? Stick with the default.

Insulin syringes are marked in units. 100 units = 1 mL, so 10 units = 0.1 mL. We'll tell you exactly how many units to draw.

Step 5 · of 6

How much BAC water to add?

BAC water is the sterile liquid that dissolves the powder. More water = larger, easier draws.

Step 6 · of 6

When did you (or will you) mix it?

Optional — lets us calculate when the vial expires.

You'll get a shareable link, a PDF, printable vial labels, and a one-click supply cart.

Plan summary

BPC-157

10 u
per dose on your syringe

Mix 5 mg of BPC-157 with 2 mL of BAC water. Each 250 mcg dose is 0.1 mL — 10 units on your 1 mL insulin syringe (100 units). You'll get about 20 doses per vial.

Vial strength
5 mg
BAC water
2 mL
Concentration
2.5 mg/mL
Doses per vial
20
Draw to this level
10 units on the 1 mL insulin syringe (100 units)
0u10u20u30u40u50u60u70u80u90u100u
Syringe capacity: 100 units

In plain English

You're dissolving 5 mg of BPC-157 in 2 mL of BAC water. That makes each mL contain 2.5 mg (or 2500 mcg) of peptide. To dose 250 mcg, you draw 0.100 mL of the mixed solution — which is 10 units on the 1 mL insulin syringe (100 units).

Step-by-step

  1. 1Wash your hands and lay out your supplies on a clean surface.
  2. 2Wipe the top of the BAC water vial with an alcohol prep pad. Let it dry.
  3. 3Using a syringe, draw 2 mL of BAC water.
  4. 4Wipe the top of the peptide vial. Slowly inject the BAC water along the inside wall of the vial — do not aim directly at the peptide powder.
  5. 5Gently swirl (do not shake) until the powder is fully dissolved. The solution should look clear.
  6. 6Label the vial with the peptide name, date mixed, and expiration.
  7. 7Refrigerate the reconstituted vial immediately.
  8. 8When ready to dose: wipe the vial top, invert the vial, and draw 10 units on the 1 ml insulin syringe (100 units).
  9. 9Wipe the injection site, inject, then dispose of the syringe safely in a sharps container.

Storage & expiration

Refrigerate at 36–46°F (2–8°C). Protect from light.

Shelf life
30 days refrigerated
Recommended supplies

Everything you'll need

Pre-selected based on your plan. Adjust quantities or remove any item.

  • 💧
    Bacteriostatic Water — 30 mL vial
    Diluent used to reconstitute the peptide.
  • 💉
    Insulin syringes — 1 mL / 100 units (100 pack)
    Enough for approximately 20 injections.
  • 🧴
    Alcohol prep pads (200 pack)
    For sanitizing vial tops and injection site.

Assumptions used

  • Concentration is calculated as (vial strength in mg) ÷ (BAC water in mL).
  • Syringe units use the U-100 insulin scale: 100 units = 1 mL.
  • BAC water amount was recommended automatically (2 mL) to give clean dosing math.