BPC-157 Reconstitution Calculator

BPC-157 (Body Protection Compound-157) is a synthetic pentadecapeptide most often supplied as a 5 mg or 10 mg lyophilized vial. To use it in research it has to be reconstituted with bacteriostatic water, and the concentration you choose determines how many insulin units you'll draw per dose.

The calculator below takes three inputs — the peptide amount in the vial, the amount of bacteriostatic water you'll add, and your target research dose — and returns the mg/mL concentration, the mL to draw, and the equivalent insulin units on a U-100 syringe. It also suggests an optimal reconstitution volume so your dose lands on a clean whole-unit mark, which makes drawing consistent and accurate.

Common BPC-157 protocols report doses of roughly 250–500 mcg once or twice daily in research contexts. Reconstituting a 5 mg vial with 2 mL of bacteriostatic water yields 2.5 mg/mL — a 250 mcg dose is then 0.1 mL, or 10 units on a U-100 insulin syringe. Adjust vial strength, water volume, and dose to match your protocol.