Question 1

How many units is a 2.5 mg dose of Tirzepatide (15mg vial, 2ml diluent)?

Accepted Answer

33.3 units on a standard U-100 insulin syringe (0.333 ml). Mixing a 15mg vial of Tirzepatide with 2ml of bacteriostatic water gives a concentration of 7.5 mg/ml. On a U-100 insulin syringe that means: 2.5 mg = 33.3 units · 5 mg = 66.7 units · 7.5 mg = 100 units · 10 mg = 133.3 units · 15 mg = 200 units.

Question 2

What is the concentration of 15mg of Tirzepatide in 2ml?

Accepted Answer

15mg ÷ 2ml = 7.5 mg/ml.

Question 3

Which syringe do these unit marks refer to?

Accepted Answer

A standard U-100 insulin syringe, where 100 units = 1 ml. On U-50 or U-30 syringes the same volume reads as half or 30% of the U-100 marks. These are mathematical conversions for organizational purposes only — not medical advice.

Dose	Draw volume	U-100 units
2.5 mg	0.333 ml	33.3 U
5 mg	0.667 ml	66.7 U
7.5 mg	1 ml	100 U
10 mg	1.333 ml	133.3 U
15 mg	2 ml	200 U

Tirzepatide 15mg in 2ml — syringe units chart