Tirzepatide calculator
Tirzepatide Reconstitution Calculator
Draw to
On a U-100 insulin syringe. 100 units = 1 mL.
Common Tirzepatide vial sizes
Tirzepatide is commonly supplied as 10, 15, 20, 30, 60 mg vials. A common starting point is 30 mg reconstituted with 3 mL of bacteriostatic water, which gives 10 mg/mL.
How to reconstitute Tirzepatide
- Add 3 mL of bacteriostatic water (or your chosen volume) slowly down the side of the vial.
- Swirl gently until the solution is clear. Do not shake.
- Enter your vial size, water volume, and dose in the calculator above.
- Draw to the exact unit mark it highlights on the syringe.
Example dose in units
At 10 mg/mL, a 2.5 mg dose of Tirzepatide is about 25 units on a U-100 insulin syringe. Change any value above to match your own vial.
Storage and handling
Tirzepatide has an approximate half-life of 120 hours. Once reconstituted, peptides are generally kept refrigerated and protected from light, and are often used within about 28 days. See our storage guide for general handling information.
Frequently asked questions
- How do I reconstitute a tirzepatide vial?
- Add your chosen volume of bacteriostatic water to the lyophilized vial, swirl gently rather than shaking, and let it dissolve. The calculator turns your vial strength and water volume into the units to draw for a given dose.
- How many units is a 5 mg dose of tirzepatide?
- It depends on concentration. At 10 mg/mL (for example 30 mg in 3 mL), a 5 mg dose is 0.5 mL, which is 50 units on a U-100 syringe. Enter your own numbers above to check.
- What concentration should I mix tirzepatide to?
- Many people aim for a round concentration like 10 mg/mL so the math is simple. Use the recommended-water option to land on clean, easy-to-read units.
Related calculators and guides
Keep this calculation in your pocket
Stackr saves every vial you reconstitute, tracks doses remaining, and reminds you to reorder before you run out. The reference app for people who take their protocol seriously.
Educational tool only, not medical advice. Peptides are research chemicals, not for human consumption. Full disclaimer.