Tirzepatide dosage & reconstitution calculator
Pre-filled with common Tirzepatide vial sizes. Adjust any value to match your specific vial and dose.
Tirzepatide research guide — mechanism, evidence & citations →Your mix
Syringe
Fill in vial size, BAC water, and dose to see your draw volume.
Educational research tools — not medical advice.
About Tirzepatide
Tirzepatide is a novel dual GIP/GLP-1 receptor agonist developed by Eli Lilly. It is FDA-approved as Mounjaro (type 2 diabetes) and Zepbound (chronic weight management) and has demonstrated significant efficacy in clinical trials for both glycemic control and weight reduction. The calculator helps determine draw volume for compounded formulations — always follow your prescriber's titration schedule.
Common Tirzepatide vial sizes
| Vial size | BAC water | Concentration |
|---|---|---|
| 5mg | 2mL | 2,500 mcg/mL |
| 5mg | 3mL | 1,667 mcg/mL |
| 10mg | 2mL | 5,000 mcg/mL |
| 10mg | 3mL | 3,333 mcg/mL |
Frequently asked questions
What is the difference between Mounjaro and Zepbound?
Both contain tirzepatide. Mounjaro is FDA-approved for type 2 diabetes; Zepbound is approved for chronic weight management. They are chemically identical.
What concentration does a 10mg tirzepatide vial give with 2mL BAC water?
Reconstituting a 10mg vial with 2mL of BAC water gives a concentration of 5,000 mcg/mL. Use the calculator above to find the draw volume for your prescribed dose.
Is compounded tirzepatide available in 2026?
FDA declared the tirzepatide shortage resolved in December 2024. Wind-down periods ended in Q1 2025. Compounded tirzepatide is generally prohibited except for narrow documented exceptions. Confirm the legal basis with your provider.