Tool
Reconstitution Calculator
Enter your vial details and desired dose. Get exactly how many units to draw.
mg
mL
mcg
x/day
Your Protocol
Draw per dose
10 unitson a U-100 insulin syringe
Concentration
2,500 mcg/mL2.5 mg/mL
Doses per vial
20at 250 mcg each
Days of supply
20 daysat 1x/day
▶Common presets
How Reconstitution Math Works
When you add bacteriostatic water to a lyophilized (freeze-dried) peptide vial, you create a solution with a known concentration. The math is straightforward:
- Concentration = Vial size (mcg) ÷ Water added (mL)
- Volume per dose = Desired dose (mcg) ÷ Concentration (mcg/mL)
- Units to draw = Volume (mL) × 100 (for a U-100 insulin syringe)
A U-100 insulin syringe has 100 units per 1 mL. So 10 units = 0.10 mL, 20 units = 0.20 mL, and so on.
Common Reconstitution Examples
Recovery
BPC-157
5 mg vial + 2 mL BAC water
- Concentration: 2,500 mcg/mL
- 250 mcg dose = 10 units
- 500 mcg dose = 20 units
- 20 doses at 250 mcg per vial
Tissue Repair
TB-500
5 mg vial + 1 mL BAC water
- Concentration: 5,000 mcg/mL
- 2 mg dose = 40 units
- 2.5 mg dose = 50 units
- 2 doses at 2.5 mg per vial
Skin & Anti-Aging
GHK-Cu
50 mg vial + 5 mL BAC water
- Concentration: 10,000 mcg/mL
- 1 mg dose = 10 units
- 2 mg dose = 20 units
- 25 doses at 2 mg per vial