Tirzepatide dosage chart
For the vial sizes sold, this Tirzepatide units chart shows your dose at left and your vial and water at top, so you can find the units to draw.
- Available vial sizes
- 10, 15, 20, 30, 40, 50, 60, 100 and 120 mg
- status of approval
- FDA-approved
- Amount in each U-100 syringe unit
- The amount is 0.01 mL
Tirzepatide dosing chart: units
| Your dose | 10 mg vial + 2 mL | 15 mg vial + 3 mL | 20 mg vial + 2 mL | 30 mg vial + 3 mL | 40 mg vial + 2 mL |
|---|---|---|---|---|---|
| 2.5 mg | 50 units | 50 units | 25 units | 25 units | 12.5 units |
| 5 mg | 100 units | 100 units | 50 units | 50 units | 25 units |
| 7.5 mg | 150 units over 1 mL | 150 units over 1 mL | 75 units | 75 units | 37.5 units |
| 10 mg | 200 units over 1 mL | 200 units over 1 mL | 100 units | 100 units | 50 units |
| 12.5 mg | 250 units over 1 mL | 250 units over 1 mL | 125 units over 1 mL | 125 units over 1 mL | 62.5 units |
| 15 mg | 300 units over 1 mL | 300 units over 1 mL | 150 units over 1 mL | 150 units over 1 mL | 75 units |
Each dose row shows a step from the FDA label.
How to read the tirzepatide dosing chart in units
Choose the column for your vial and added water, such as 10 mg with 2 mL. Then move down to your dose. That cell shows how many units to draw with a U-100 insulin syringe. For any water amount that isn’t listed, the calculator will work it out.
Tirzepatide monthly dosing from the label
Every dose step in these tables traces back to the FDA label (Zepbound label on DailyMed, Mounjaro label on DailyMed); for compounded or research vials, each step is shown in units. Which step you take is up to your prescriber.
Zepbound, given under the skin once each week
| Label step | Dose | 10 mg + 2 mL | 15 mg + 3 mL | 20 mg + 2 mL |
|---|---|---|---|---|
| Weeks 1-4 | 2.5 mg | 50 units | 50 units | 25 units |
| Then, once you have spent at least 4 weeks on each step | 5 mg | 100 units | 100 units | 50 units |
| Next step | 7.5 mg | 150 units over 1 mL | 150 units over 1 mL | 75 units |
| Next step | 10 mg | 200 units over 1 mL | 200 units over 1 mL | 100 units |
| Next step | 12.5 mg | 250 units over 1 mL | 250 units over 1 mL | 125 units over 1 mL |
| Highest step | 15 mg | 300 units over 1 mL | 300 units over 1 mL | 150 units over 1 mL |
Mounjaro, given under the skin once each week
| Label step | Dose | 10 mg + 2 mL | 15 mg + 3 mL | 20 mg + 2 mL |
|---|---|---|---|---|
| Weeks 1-4 | 2.5 mg | 50 units | 50 units | 25 units |
| Then | 5 mg | 100 units | 100 units | 50 units |
| If needed, increase by 2.5 mg once you have stayed at a step for at least 4 weeks. | 7.5 mg | 150 units over 1 mL | 150 units over 1 mL | 75 units |
| Next step | 10 mg | 200 units over 1 mL | 200 units over 1 mL | 100 units |
| Next step | 12.5 mg | 250 units over 1 mL | 250 units over 1 mL | 125 units over 1 mL |
| Highest step | 15 mg | 300 units over 1 mL | 300 units over 1 mL | 150 units over 1 mL |
Compounded tirzepatide dosage chart (vials)
| Vial | Water added | Strength | Units for a sample dose |
|---|---|---|---|
| 10 mg | 1 mL | 10 mg/mL | 2.5 units for 250 mcg |
| 10 mg | 2 mL | 5 mg/mL | 5 units for 250 mcg |
| 10 mg | 3 mL | 3.333 mg/mL | 7.5 units for 250 mcg |
| 15 mg | 1 mL | 15 mg/mL | 6.7 units for 1 mg |
| 15 mg | 2 mL | 7.5 mg/mL | 3.3 units for 250 mcg |
| 15 mg | 3 mL | 5 mg/mL | 5 units for 250 mcg |
| 20 mg | 1 mL | 20 mg/mL | 5 units for 1 mg |
| 20 mg | 2 mL | 10 mg/mL | 2.5 units for 250 mcg |
| 20 mg | 3 mL | 6.667 mg/mL | 3.8 units for 250 mcg |
| 30 mg | 1 mL | 30 mg/mL | 3.3 units for 1 mg |
| 30 mg | 2 mL | 15 mg/mL | 6.7 units for 1 mg |
| 30 mg | 3 mL | 10 mg/mL | 2.5 units for 250 mcg |
| 40 mg | 2 mL | 20 mg/mL | 5 units for 1 mg |
| 40 mg | 3 mL | 13.333 mg/mL | 7.5 units for 1 mg |
| 40 mg | 5 mL | 8 mg/mL | 3.1 units for 250 mcg |
| 40 mg | 10 mL | 4 mg/mL | 6.2 units for 250 mcg |
approval status for Tirzepatide
The FDA-approved products are Mounjaro and Zepbound from Lilly, offered as prefilled pens and vials; compounded and research vials do not have FDA approval.
Questions people often ask
How many units equal 2.5 mg of tirzepatide?
Your vial is what determines it. When the concentration is 10 mg/mL, 2.5 mg measures 25 units. You get that concentration with a 20 mg vial plus 2 mL or a 30 mg vial plus 3 mL. At 5 mg/mL, the same dose measures 50 units.
What if the chart doesn't include my Tirzepatide vial size?
Use the Tirzepatide calculator: enter any vial size and water amount to get the units.