Mounjaro dose schedule
Put in your start date (or where you are now) and get the licensed step-up with real dates, which KwikPen to order and when, and a calendar you can add to your phone.
Updated 30 October 2026
Weekly Mounjaro injection, Saturdays. Here’s the licensed step-up from your start:
| Dose | Weeks | Dates | Pen to order | Order by |
|---|---|---|---|---|
2.5 mg you’re here | 1 to 4 | 31 Oct 2026 → 27 Nov 2026 | 2.5 mg KwikPen | 24 Oct 2026 |
5 mg | 5 to 8 | 28 Nov 2026 → 25 Dec 2026 | 5 mg KwikPen | 21 Nov 2026 |
7.5 mg | 9 to 12 | 26 Dec 2026 → 22 Jan 2027 | 7.5 mg KwikPen | 19 Dec 2026 |
10 mg | 13 to 16 | 23 Jan 2027 → 19 Feb 2027 | 10 mg KwikPen | 16 Jan 2027 |
12.5 mg | 17 to 20 | 20 Feb 2027 → 19 Mar 2027 | 12.5 mg KwikPen | 13 Feb 2027 |
15 mg maintenance | 21+ | 20 Mar 2027 onwards | 15 mg KwikPen | 13 Mar 2027 |
These are the earliest step-up dates (4 weeks apart). Your prescriber may move slower, hold a dose, or settle you at 5 or 10 mg.
Schedule from the Mounjaro SmPC (emc).
Mounjaro dose chart
The licensed step-up. Each step is at least 4 weeks; your prescriber chooses the maintenance dose (5, 10 or 15 mg) and the pace.
| Dose | When |
|---|---|
| 2.5 mg | Weeks 1 to 4 |
| 5 mg | Weeks 5 to 8 |
| 7.5 mg | Weeks 9 to 12 |
| 10 mg | Weeks 13 to 16 |
| 12.5 mg | Weeks 17 to 20 |
| 15 mgmaintenance | Week 21 onwards |
Common questions
- When do I increase my Mounjaro dose?
- The licensed schedule is 2.5 mg once weekly for the first 4 weeks, then 5 mg. After that, the dose can be increased in 2.5 mg steps, with at least 4 weeks on each, up to a maintenance dose of 5, 10 or 15 mg (15 mg is the maximum). Your prescriber decides your pace and your maintenance dose.
- What is the Mounjaro dose chart?
- 2.5 mg (weeks 1 to 4) → 5 mg → 7.5 mg → 10 mg → 12.5 mg → 15 mg, each step at least 4 weeks apart. Many people settle at 5, 10 or 15 mg rather than going all the way up.
- Which KwikPen do I order?
- Each KwikPen is a single strength and holds 4 weekly doses, so a 4-week step needs one pen of that strength. The tool shows an order-by date a week ahead so a delivery doesn’t leave you short.
- Do I have to reach 15 mg?
- No. 5, 10 and 15 mg are all licensed maintenance doses. Your prescriber sets the dose that works for you, and may keep you lower or move more slowly, especially if you get side effects.
- What if I get side effects when stepping up?
- The SmPC says a step-up can be delayed, or the dose dropped back, if gastrointestinal symptoms are significant. Talk to your prescriber. This tool shows the standard schedule, not a rule you must follow.
Related tools
Wegovy dose scheduleThe 16-week step-up with your dates and when to order pens.Protein & food on a GLP-1Your daily protein target, plus what to eat and what to ease off.Can I get Mounjaro on the NHS?Your BMI and conditions → which NHS route applies, and when.
This is the licensed schedule for reference, not a prescription or medical advice. Your prescriber sets your doses and the pace, and may change them. Report a side effect via the Yellow Card scheme.