BPC-157 Reconstitution and Dosage Guide

BPC-157 is a synthetic peptide studied in laboratory and animal models for tissue-repair pathways. It ships as a freeze-dried (lyophilized) powder, usually in a 5 mg or 10 mg vial, and has to be reconstituted with bacteriostatic water before any volume can be measured. This guide covers the arithmetic only: how vial strength and diluent volume set the concentration, and how a microgram figure converts into units on an insulin syringe.

Everything here is third-person reference information for research and educational use. It is not dosing advice, and BPC-157 is not approved for human consumption. Any decision about whether or how much to use belongs with a licensed clinician. To run your own numbers instead of the worked examples below, use the BPC-157 calculator.

The three numbers that drive everything

Reconstitution math reduces to one concentration value and two conversions. You need the vial strength in milligrams, the volume of bacteriostatic water you add in milliliters, and the dose you want to express, in micrograms.

• Concentration = vial strength / water volume. A 10 mg vial in 2 mL gives 5 mg/mL, which is 5000 mcg/mL.
• Draw volume = dose / concentration. A 250 mcg figure at 5000 mcg/mL is 0.05 mL.
• Units = draw volume x 100 on a U-100 insulin syringe. 0.05 mL is 5 units.

Reconstituting a 10 mg vial

A 10 mg vial with 2 mL of bacteriostatic water is the common reference setup because it lands on round, easy-to-read units. That mix gives 5 mg/mL (5000 mcg/mL).

• 250 mcg = 0.05 mL = 5 units
• 300 mcg = 0.06 mL = 6 units
• 500 mcg = 0.10 mL = 10 units

At this concentration a 10 mg vial holds 40 reference doses of 250 mcg, or 20 at 500 mcg. If you prefer even smaller numbers on the barrel, adding more water lowers the concentration and raises the unit count for the same microgram figure, which can make tiny volumes easier to see.

Reconstituting a 5 mg vial

A 5 mg vial in 2 mL gives 2.5 mg/mL (2500 mcg/mL). Because the concentration is half that of the 10 mg setup above, every microgram figure draws to twice the volume and twice the units.

• 250 mcg = 0.10 mL = 10 units
• 300 mcg = 0.12 mL = 12 units
• 500 mcg = 0.20 mL = 20 units

To make a 5 mg vial read on the same scale as a 10 mg vial, use 1 mL of water instead of 2 mL. That returns 5 mg/mL, so 250 mcg is again 5 units. The tradeoff is a smaller total liquid volume to work with.

The typical microgram reference range

Across protocols described in the research literature, BPC-157 figures are commonly discussed in a 250 to 500 mcg range. The table below shows how that range maps to units at the two standard concentrations. These are arithmetic conversions, not recommendations.

• 250 mcg: 5 units at 5 mg/mL, 10 units at 2.5 mg/mL
• 350 mcg: 7 units at 5 mg/mL, 14 units at 2.5 mg/mL
• 500 mcg: 10 units at 5 mg/mL, 20 units at 2.5 mg/mL

If you change the vial size, the water volume, or the target microgram figure, recompute from scratch rather than reusing an old unit count. The reconstitution calculator and the broader peptide dosage calculator handle the same math for other compounds, and the mg to units converter isolates the final mass-to-units step.

Handling and storage notes

General references describe reconstituted peptides as kept refrigerated and used within roughly a few weeks. Bacteriostatic water (saline with benzyl alcohol) is the usual diluent for multi-draw vials because the preservative limits microbial growth between draws. Aim the water down the vial wall rather than blasting the powder, and swirl rather than shake.