Just the Units index ↓ ◐

Tirzepatide at 5 mg/mL: the schedule in units

If the label says 5 mg / 1 mL, 10 mg / 2 mL, 15 mg / 3 mL — it's 5 mg/mL. Read down. Every step of the standard tirzepatide ladder, as units on a U-100 insulin syringe.

Tirzepatide (Zepbound, Mounjaro) titration at 5 mg/mL. Each step is held four weeks before the next.
WhenDosemLUnitsSyringe
Weeks 1–42.5 mg0.5 50 50-unit
Weeks 5–85 mg1 100 100-unit
Weeks 9–127.5 mg1.5 150 ✗ does not fit in one syringe
Weeks 13–1610 mg2 200 ✗ does not fit in one syringe
Weeks 17–2012.5 mg2.5 250 ✗ does not fit in one syringe
Week 21+15 mg3 300 ✗ does not fit in one syringe

The weakest common vial — usually a 5 mg / 1 mL or 10 mg / 2 mL label. It carries 2.5 and 5 mg comfortably (50 and 100 units) and then stops: 7.5 mg is 150 units. If you're on this and titrating, the next vial needs to be stronger, and it's worth saying so before the pharmacy ships the next one.

This vial stops at 5 mg. Above that, one dose is more than 100 units — more than one syringe holds. That's two injections per dose, or a stronger vial. Worth raising with the pharmacy at the step before you get there.

Each step on the barrel

0102030405050U-100
2.5 mg → 50 units on a 50-unit syringe
0102030405060708090100100U-100
5 mg → 100 units on a 100-unit syringe
150 units — more than one syringe holds. 1.5 mL: that's two draws, or a stronger vial.
7.5 mg → 150 units
200 units — more than one syringe holds. 2 mL: that's two draws, or a stronger vial.
10 mg → 200 units
250 units — more than one syringe holds. 2.5 mL: that's two draws, or a stronger vial.
12.5 mg → 250 units
300 units — more than one syringe holds. 3 mL: that's two draws, or a stronger vial.
15 mg → 300 units

In-between doses at 5 mg/mL

Not on any label. They exist because vials make them possible, and they only make sense if a prescriber put you there deliberately — usually because a full step up was too much at once.

DosemLUnits at 5 mg/mL
3.75 mg0.7575
6.25 mg1.25125 ✗
8.75 mg1.75175 ✗
11.25 mg2.25225 ✗

Your dose isn't on the list

Tirzepatide at 5 mg/mL → unitsU-100 syringe
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Common setups:
Other strengths: 10 mg/mL · 20 mg/mL · 40 mg/mL. All of them side by side: the tirzepatide chart. One dose at a time, across every strength: 2.5 mg · 5 mg · 7.5 mg · 10 mg · 12.5 mg · 15 mg.