BPC-157 Peptide Dosage Calculator
Computes the reconstituted concentration, the draw volume, and the corresponding mark on a U-100 syringe scale.
For laboratory research use only. Not for human or veterinary use.
mg
mL
mg
Units on the scale
Enter a mass to draw
Concentration
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Draw volume
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Draws per vial
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0.3 mL syringe
Reading the scale: the highlighted mark corresponds to the calculated volume on a standard U-100 insulin syringe — 100 units = 1 mL, and each numbered tick is one unit.
Reconstituting BPC-157
BPC-157 is a synthetic pentadecapeptide — fifteen amino acids, molecular weight 1419.55 — supplied lyophilized in a 10 mg vial. Like most short peptides it is readily soluble in bacteriostatic water, and the reconstitution question is not whether it dissolves but at what concentration, because that single choice sets the draw volume for every measurement taken from the vial afterward.
The arithmetic is fixed: concentration is peptide mass divided by diluent volume, and draw volume is target mass divided by that concentration. Adding 2 mL of bacteriostatic water to a 10 mg vial yields 5 mg/mL; adding 1 mL yields 10 mg/mL. The more concentrated preparation puts a given mass into a smaller, harder-to-measure volume on the syringe scale; the more dilute one spreads it across a wider, more forgiving span. The calculator above resolves that trade-off numerically for the 10 mg vial and marks the result on a U-100 scale.
Why concentration choice matters for BPC-157
Because BPC-157 masses studied in the literature are small relative to the vial, the concentration decision is what keeps a draw readable rather than crowded against the first few unit marks. A 10 mg vial reconstituted at 5 mg/mL divides into ten times more resolvable draws than the same vial taken to a heavy concentration, which is the practical reason the diluent volume is worth calculating rather than estimating.
Handling and stability
Lyophilized BPC-157 is stable at room temperature in the sealed vial; reconstituted solution is stored refrigerated at 2–8 °C and protected from light. The 28-day figure often cited is a bacteriostatic-water handling convention, not a statement about peptide stability — the bacteriostatic water page covers that distinction. Reconstitution is by gentle swirling; mechanical agitation shears peptide chains, and a sheared peptide dissolves identically to an intact one, which is why visual clarity alone does not confirm integrity.
Every BPC-157 lot is HPLC-tested for purity and mass-spec verified for identity, with the molecular weight, formula, sequence, and purity specification published on the product page and the analysis tied to the lot number on the vial.
More reconstitution tools
- Peptide Calculator — the general calculator, any vial mass and diluent volume.
- How to Reconstitute Peptides — the procedure, the diluent options, and the handling errors that wreck a peptide before it reaches the bench.
- BPC-157 Peptide — specification, molecular data, and published COA.