Doses of Mounjaro: What They Are and How Titration Works

Mounjaro is a once-weekly injectable medicine whose active substance, tirzepatide, acts on both GLP-1 and GIP receptors involved in appetite regulation. Because of this mechanism, the medicine is typically introduced at a low dose — commonly 2.5 mg — and increased at intervals determined by your prescriber, not a set schedule that applies to everyone.

The available dose strengths

According to the electronic Medicines Compendium (eMC) product information, the six dose strengths available are:

• 2.5 mg
• 5 mg
• 7.5 mg
• 10 mg
• 12.5 mg
• 15 mg

Each strength is supplied in its own pre-filled pen. One pen contains one dose — so a single pen is intended for one weekly injection. If you are wondering how many doses of Mounjaro are in one pen, the answer is one: each pen delivers a single injection.

How titration is decided

The step from one dose strength to the next is a clinical decision made by your prescriber based on how you are responding and tolerating the medicine. No one should adjust their own dose independently. Whether a higher dose is appropriate, and when, is something only your prescriber can determine based on your individual circumstances.

Can you take two doses of 2.5 mg instead of one higher dose?

This is a question some people ask — for instance, whether taking two 2.5 mg injections could substitute for a 5 mg dose. Dose decisions of any kind, including this, must be made by your prescriber or doctor. Do not adjust how you take the medicine without speaking to them first.

Mounjaro and Wegovy doses compared

Mounjaro (tirzepatide) and Wegovy (semaglutide) are different medicines with different dose strengths and titration schedules — they are not interchangeable. For a factual overview of how their dose ranges differ, see the comparison of doses of Wegovy or explore the broader Wegovy dosing overview. For a deeper look at Mounjaro titration specifically, the Mounjaro dosing guide covers the schedule in more detail.

Keeping an accurate record of every dose you take is one of the most practical things you can do on a weekly injection schedule — and it matters more than it might seem. GLP Trackr is built around dose logging as a core feature.

Each time you inject, you can log the dose strength, the date, and the time in the app. Over weeks and months this builds a complete, accurate picture of your treatment history — something genuinely useful when you have an appointment with your prescriber and want to discuss how the titration has gone, any side effects you noticed around dose changes, or whether a dose adjustment makes sense.

The app also lets you set a weekly dose reminder, so your injection day is never quietly forgotten. And if you do miss a dose, you can log that too — keeping a clear record to bring to your prescriber rather than trying to piece it together from memory. Any decision about what to do after a missed dose belongs with your prescriber or doctor, not with an app.

You can explore the full context of your Mounjaro journey — including how dose stages fit into the broader treatment — in the Mounjaro hub.

A note on safety: All decisions about your dose — when to increase, whether to stay at a current level, or what to do if you have concerns — should be made with your prescriber. GLP Trackr helps you record your journey accurately so those conversations are better informed; it is not a substitute for clinical guidance.

Ready to keep a clear log of every dose? Download GLP Trackr on the App Store or Google Play and start your free 7-day trial — your injection history, all in one place.