Mounjaro maintenance dose: what it means and how you get there

Picture where you are: you've just finished your second or third pen

You started on 2.5mg. Nausea was maybe noticeable for the first week or two, then eased. Your appetite dropped a little. Now the pen has changed (you're on 5mg) and the question forming is: is this my maintenance dose, or is there further to go?

The honest answer is that 5mg is a maintenance dose for some people and a stepping stone for others. The Mounjaro SmPC on the electronic Medicines Compendium describes the licensed schedule as a progressive titration, with 2.5mg serving as a tolerability-only starter and each subsequent step serving a dual purpose: reducing the chance of gastrointestinal side effects and inching toward the dose where appetite suppression and metabolic effect are most pronounced. The prescriber's job at each repeat is to weigh how well you're tolerating the current dose against how much further the schedule has to offer.

If you're mid-titration and trying to understand whether 5mg could be your long-term dose, the short answer is: possibly, but most people aren't at maintenance yet at that point. Your prescriber reviews both your weight trajectory and your side-effect experience before confirming any dose as the one to settle on.

One practical note: if you're ordering monthly and a bank holiday or payday falls awkwardly, building in a couple of days' buffer on your repeat request avoids a gap in treatment, continuity matters once you're established on a dose.

What 'maintenance dose' actually means in clinical practice

The phrase gets used loosely. In the strictest sense, your maintenance dose of Mounjaro is the dose you stay on after titration is complete, the one where further increases aren't needed or aren't tolerated. NICE's technology appraisal of tirzepatide (TA1026) uses the phrase 'highest tolerated dose' deliberately, because the clinical goal is the top of the schedule you can manage comfortably, not a fixed target strength.

In practice, the maintenance phase looks different from the titration phase in a few ways. Dose changes stop (unless something changes clinically). Weight loss may slow or plateau, which is normal and expected. The focus shifts to sustaining what's been achieved alongside lifestyle changes, a reduced-calorie diet and regular activity remain part of the licensed indication throughout.

The maintenance dose of tirzepatide more broadly follows the same principle across its licensed uses: there is a floor (2.5mg to start), a ceiling (15mg), and a personalised landing point somewhere in between. For those interested in the general Mounjaro overview, the Mounjaro information page covers mechanism and licensing in full.

Side effects during the maintenance phase tend to be milder than during titration, the GI effects (nausea, loose stools, indigestion) that are most common when doses are increasing generally settle once the dose is stable. That said, they don't disappear for everyone. The NHS patient-level guidance on tirzepatide sets out the full side-effect profile and the signs that need prompt medical attention.

When a prescriber might adjust or pause your maintenance dose

Reaching a maintenance dose isn't permanent in every case. Several situations prompt a clinical conversation about whether the current dose should be reviewed.

If you've been on the highest tolerated dose for six months and weight loss has been less than 5%, NICE TA1026 recommends reassessing whether continuing treatment is appropriate, that threshold applies at the maintenance dose, not during titration. A prescriber working through a regulated service will flag this at your repeat review rather than simply reissuing the pen.

Conversely, some people stabilise comfortably at a lower strength and find no benefit from pushing higher, 7.5mg is a genuine maintenance dose for a meaningful proportion of patients, and there is no clinical obligation to reach 15mg if 7.5mg or 10mg is doing the job without troublesome side effects.

Illness, surgery, or a period off treatment can all affect where you restart. Coming back after a gap, or switching from another service, should always involve a clinical re-review rather than simply resuming the last dose. You can read about what happens after stopping in our piece on maintaining weight after Mounjaro, which covers the evidence on what tends to happen and how to approach that conversation with your prescriber.

For a cost comparison across doses and an honest look at what private treatment pricing includes, the weight-loss treatments page sets out what's covered in one transparent price. If you're ready to have the dose conversation with a prescriber, a free consultation is the place to start.

Start your free consultation with our clinical team, your answers are reviewed the same day by a GPhC-registered prescriber, and treatment is dispatched to you free the next working day if you're approved.