Tirzepatide Dosing & Reconstitution Chart
How many insulin-syringe units to draw for Tirzepatide, based on how much bacteriostatic water you add to a 10 mg vial. Every number below is on a U-100 (100 units = 1 mL) syringe and matches our calculator.
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| Water added | Concentration | 1.25 mg dose | 2.5 mg dose | 3.75 mg dose | 5 mg dose |
|---|---|---|---|---|---|
| 1 mL | 10 mg/mL | 12.5 u | 25 u | 37.5 u | 50 u |
| 2 mL | 5 mg/mL | 25 u | 50 u | 75 u | 100 u |
| 3 mL | 3.333 mg/mL | 37.5 u | 75 u | 112.5 u | 150 u |
| 5 mL | 2 mg/mL | 62.5 u | 125 u | 187.5 u | 250 u |
Cells show units to draw on a U-100 insulin syringe. Highlighted cells exceed one full 1 mL (100-unit) syringe — add more water, split the dose, or use a larger syringe.
Calculate your exact Tirzepatide dose
Pre-filled with Tirzepatide’s commonly cited vial and dose. Change any field to match your vial — it shows the exact units, concentration, and doses per vial.
Add 2 mL of bacteriostatic water to your 10 mg vial. That gives you about 4 doses of 2.5 mg. For each dose, draw 50 units into a 100-unit insulin syringe.
Tirzepatide dosing FAQ
How many units of Tirzepatide should I draw?
Reconstituting a 10 mg vial of Tirzepatide with 2 mL of bacteriostatic water gives 5 mg/mL. A 2.5 mg dose is about 50 units on a U-100 insulin syringe, roughly 4 doses per vial. This is a commonly cited example for context, not medical advice.
How much bacteriostatic water do I add to Tirzepatide?
There is no single correct amount. More water makes each dose a larger, easier-to-measure volume; less water makes it more concentrated. The chart above shows the units for 1–5 mL — 2 mL is a common choice for a 10 mg vial.
How many doses are in a 10 mg Tirzepatide vial?
At a 2.5 mg dose, a 10 mg vial holds about 4 doses. Larger doses mean fewer doses per vial, and the amount of water you add does not change this.