At 10 mg/mL, every 10 units on a U-100 syringe is 1 mg of tirzepatide.

2.5 mg is 25 units, and 5 mg is 50 units. Use the calculator for any other amount.

Dose ↔ units

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How long will my vial last?

Uses the vial and dose from the calculator above.

Real vials can hold slightly more or less than the label says, and a little is lost in the needle.

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Tirzepatide 10 mg/mL dose to units chart

Tirzepatide 10 mg/mL: dose to units on a U-100 insulin syringe. Listed doses are for conversion only. Your prescriber sets your dose.
DoseVolumeUnits (U-100)
2.5 mg0.25 mL25 units
5 mg0.5 mL50 units
7.5 mg0.75 mL75 units
10 mg1 mL100 units
12.5 mg1.25 mL125 units (more than a 1 mL syringe holds)
15 mg1.5 mL150 units (more than a 1 mL syringe holds)

Tirzepatide 10 mg/mL units to mg chart

Tirzepatide 10 mg/mL: units to mg
Units (U-100)VolumeDose
5 units0.05 mL0.5 mg
10 units0.1 mL1 mg
15 units0.15 mL1.5 mg
20 units0.2 mL2 mg
25 units0.25 mL2.5 mg
30 units0.3 mL3 mg
35 units0.35 mL3.5 mg
40 units0.4 mL4 mg
45 units0.45 mL4.5 mg
50 units0.5 mL5 mg
55 units0.55 mL5.5 mg
60 units0.6 mL6 mg
65 units0.65 mL6.5 mg
70 units0.7 mL7 mg
75 units0.75 mL7.5 mg
80 units0.8 mL8 mg
85 units0.85 mL8.5 mg
90 units0.9 mL9 mg
95 units0.95 mL9.5 mg
100 units1 mL10 mg

How long a 10 mg/mL vial lasts

Tirzepatide 10 mg/mL: full weekly doses per vial (leftover in brackets). Listed doses are for conversion only. Your prescriber sets your dose.
VialTotal2.5 mg doses5 mg doses7.5 mg doses10 mg doses12.5 mg doses (over 1 mL each)15 mg doses (over 1 mL each)
1 mL10 mg421 (+2.5 mg)1less than one doseless than one dose
2 mL20 mg842 (+5 mg)21 (+7.5 mg)1 (+5 mg)
3 mL30 mg126432 (+5 mg)2
4 mL40 mg1685 (+2.5 mg)43 (+2.5 mg)2 (+10 mg)
5 mL50 mg20106 (+5 mg)543 (+5 mg)

Real vials can hold slightly more or less than the label says, and a little is lost in the needle.

Notes for 10 mg/mL

Check the strength on every new vial

Units only mean something for one strength. If 33.3 units was 5 mg on a 15 mg/mL vial, the same 33.3 units from a 10 mg/mL vial is 3.333 mg, not 5 mg.

In July 2024 the FDA warned about dosing errors with compounded semaglutide, including mix-ups between mg, mL and units (FDA alert). The same math applies to any vial.

Questions

How many units is 2.5 mg of tirzepatide at 10 mg/mL?

0.25 mL, which is 25 units on a U-100 insulin syringe.

How many units is 5 mg of tirzepatide at 10 mg/mL?

0.5 mL, which is 50 units on a U-100 insulin syringe.

How many mg is 10 units of tirzepatide at 10 mg/mL?

10 units is 0.1 mL, which is 1 mg at this strength.

How many 5 mg doses are in a 2 mL vial of 10 mg/mL tirzepatide?

A 2 mL vial at 10 mg/mL holds 20 mg: 4 full doses of 5 mg.

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