Mounjaro Dosage Chart: Understanding the Dose Stages

Mounjaro is available in six dose strengths: 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg, and 15 mg, each supplied as a pre-filled pen for once-weekly injection. Treatment typically begins at 2.5 mg — a starting dose intended to let your body adjust — before your prescriber reviews and, if appropriate, steps you up through the subsequent strengths.

How doses are typically stepped up

Dose increases are made at the discretion of your prescriber, not on a fixed personal schedule. Many people move up roughly every four weeks, but the timing, and whether a step-up happens at all, depends on tolerability and individual response. No two journeys look identical, which is why your prescriber's guidance always takes priority over any general chart.

Dose in ml and in units

Each Mounjaro pre-filled pen delivers its full dose in a single fixed injection — there is no drawing up of liquid or measuring in units as there is with some insulin pens. The volume per injection is small (check the patient information leaflet that came with your pen for the exact figure, or refer to the electronic Medicines Compendium (eMC) for the SmPC). Because the pen handles the measurement automatically, you do not need to calculate ml or units yourself — but your prescriber or pharmacist can explain the specifics if you have questions.

Mounjaro versus other GLP-1 dose schedules

If you are comparing Mounjaro's tirzepatide schedule with semaglutide-based treatments, note that the two medicines use different dose strengths and different titration timelines — a comparison of dose stages is covered in more detail in our Mounjaro dosing overview and in our guide to Mounjaro doses in ml. Any questions about switching or comparing medicines should go directly to your prescriber.

For a closer look at the 5 mg stage specifically — a common point at which people have questions — see our guide to the Mounjaro 5 mg dose.

Keeping an accurate record of every injection is one of the most practical things you can do on a once-weekly schedule — and dose logging is the foundation of what GLP Trackr is built for.

Each time you inject, you can log the dose strength, date, and time in the app. As you move through the titration stages, your full dose history builds up in one place, giving you a clear timeline to bring to your next prescriber appointment. The app also lets you set a weekly dose reminder, so a dose is never accidentally missed or delayed.

If you do miss a dose, log it in GLP Trackr and raise it with your prescriber or doctor — any decision about what to do next belongs with them, not a general chart. Our interactive dosage reference can help you visualise where you are in your titration journey.

Always follow the guidance of your prescriber or doctor regarding your dose — they know your full medical history and are the only person who should advise on any change. If you experience side effects that feel severe or persistent at any stage, contact your healthcare professional promptly rather than adjusting your dose independently.

Ready to keep every injection on record? GLP Trackr's dose-logging and reminder features are free to try for seven days — available on the App Store and Google Play. Start your free trial and bring a clear, timestamped dose history to your next appointment.