Tirzepatide reconstitution calculator
Total mg printed on the vial
Bacteriostatic water you reconstitute with
Standard U-100 insulin syringe
Educational use only. This tool and content are for general information and do not constitute medical advice, diagnosis, or treatment. Peptides and GLP-1 medications should only be used under the supervision of a licensed healthcare provider. Always confirm dosing with your prescriber and the product label. Some peptides discussed are not approved by the FDA for human use.
Standard tirzepatide titration
Brand tirzepatide (Mounjaro and Zepbound) follows a stepped schedule, increasing every four weeks as tolerated. Compounded versions are often prescribed to mirror it.
To turn any of these milligram doses into units for your specific vial, enter your numbers in the calculator above.
Get tirzepatide with a licensed provider
A prescription matters: real reconstitution should be done with pharmacy-grade product and clinician guidance. These telehealth services handle the evaluation, prescription, and shipping.
Ro — weight loss program →Henry Meds →Affiliate links — we may earn a commission at no cost to you. Educational content, not medical advice.
Frequently asked questions
How many units is 2.5 mg of tirzepatide?
It depends on concentration. For a 30 mg vial reconstituted with 2 mL (15 mg/mL), 2.5 mg = about 17 units on a U-100 syringe. Enter your own vial and water above for an exact number.
What’s the maximum tirzepatide dose?
The maximum approved dose is 15 mg once weekly. Most people titrate up over several months and many maintain on 5–15 mg.
How do I reconstitute compounded tirzepatide?
Add your prescribed bacteriostatic water to the vial slowly, swirl gently, and refrigerate. Then use the calculator to find your units for each dose.
Save your protocol & get free dose reminders
We’ll email your dosing details and optional weekly reminders — so you never miss or mis-measure a dose.