Free, no signup, works for any peptide
Enter your peptide vial size, bacteriostatic water volume, and target dose. Get the exact units to draw on a U-100 insulin syringe, plus doses per vial. Works for GLP-1s and research peptides.
Draw to
Draw to the 20 unit mark. That is 0.200 mL of solution.
Informational and educational only. Not medical advice. This tool performs math on values you enter and is not a substitute for your prescriber.
Compound pages include titration schedules, pharmacology notes, and cited half-life data.
| Volume | Units on U-100 |
|---|---|
| 1 mL | 100 units |
| 0.5 mL | 50 units |
| 0.25 mL | 25 units |
| 0.1 mL | 10 units |
| 0.05 mL | 5 units |
Draw your chosen volume of bacteriostatic water (BAC water) into a sterile syringe and inject it slowly down the inside wall of the vial. Do not aim at the powder directly. Gently swirl or roll the vial until the powder dissolves completely. Do not shake. Store reconstituted vials refrigerated and use within 28 days, or per your pharmacy instructions.
On a U-100 insulin syringe, 1 mL equals exactly 100 units, so the units you draw equal the volume in mL multiplied by 100. Use the calculator above: it converts your vial size, water volume, and dose into the exact unit mark to draw to.
Bacteriostatic water is sterile water for injection containing 0.9% benzyl alcohol as a preservative. The preservative inhibits microbial growth so a vial can be punctured multiple times over several weeks. It is the standard diluent for reconstituting lyophilized peptides for multi-dose use.
It depends on the peptide. Healing peptides such as BPC-157 are typically dosed in micrograms (mcg), while GLP-1 receptor agonists like tirzepatide are dosed in milligrams (mg). The mcg/mg toggle in the calculator handles both.
Neutral and independent. Pharmacology is cited on every compound page. Your inputs never leave your device.