Is 5mg Mounjaro a maintenance dose, or just another step on the way?

What does 'maintenance dose' mean in practice?

There is a common assumption that maintenance simply means the dose you end up on once the treatment is working. That is roughly right, but it leaves out an important nuance: a maintenance dose is the lowest dose at which you maintain clinically meaningful weight loss with side effects you can tolerate. It is not a fixed destination printed on a packaging label.

For Mounjaro, the licensed UK strengths are 2.5, 5, 7.5, 10, 12.5 and 15mg, each delivered once weekly via the pre-filled KwikPen. According to the NHS tirzepatide medicines page, titration typically happens in 2.5mg steps roughly every four weeks, with the prescriber adjusting the pace based on how treatment is going. The 2.5mg dose is specifically a tolerability starter, and if you are curious whether it could serve a longer-term purpose, our page on using Mounjaro 2.5mg as a maintenance dose explains the circumstances in which that question arises. Five milligrams follows directly from that.

So describing 5mg as a maintenance dose would be a bit like calling the second floor of a building the top floor. It depends entirely on how tall the building is, and for most people on Mounjaro, clinical trials suggest the higher floors are where the most meaningful results live. Explore the full picture of what a Mounjaro maintenance dose involves if you want more context on how that threshold is defined.

Can 5mg ever be someone's long-term dose?

Yes, and this matters. A prescriber may decide to hold a patient at 5mg rather than continuing to titrate for several legitimate reasons: side effects at higher doses that don't settle, a personal preference once satisfactory progress is established, or certain health considerations that make slower titration more appropriate. The clinical guidance does not require anyone to reach 15mg. The target is the lowest effective dose for that individual.

What the evidence does show is that higher doses tend to produce greater average weight loss. In the SURMOUNT-1 trial, published in the New England Journal of Medicine, adults with obesity who reached the 15mg dose saw an average body-weight reduction of around 20–21% over 72 weeks. Lower doses produced meaningful results too, but the dose-response relationship is real. A prescriber weighing up whether to step someone up from 5mg will be thinking about that trajectory alongside tolerability.

If you are at 5mg and wondering whether this is as far as your prescription goes, that is a conversation worth having directly. The question of whether 7.5mg works as a longer-term dose for some people is a related one worth reading.

What happens if the titration schedule pauses at 5mg?

Sometimes titration pauses rather than stops. A prescriber might hold a patient at 5mg for an extra four weeks (or longer) if nausea or gastrointestinal discomfort is still settling. The licensed schedule is a guide, not a timetable with hard deadlines. Patience at this stage often means fewer problems at higher doses later.

The side effects most commonly associated with stepping up a dose (nausea, looser stools, indigestion, a reduced appetite that can tip into feeling unwell) tend to be most noticeable in the first week or two after a change, then fade. Holding at 5mg gives that window to close fully before moving on. This is standard clinical practice, and it is one reason why understanding what the 5mg pen period involves is useful before starting treatment.

A pause is not the same as a ceiling. If your prescriber has held you at 5mg deliberately, ask what the plan is from here. Regular clinical review (the kind that happens at every repeat through a service like ours) is the right moment for that conversation. For a broader sense of what the titration journey looks like from start to finish, the overview on our Mounjaro treatment page is a reasonable place to start.

Does the cost of Mounjaro change across the dose range?

This is a practical question that comes up frequently. Mounjaro is priced per pen, and because each pen covers four weeks regardless of strength, the cost does vary as the dose increases. Eli Lilly raised UK list prices significantly from September 2025, reported figures suggest the higher-dose pens now carry a substantially higher list price than the 2.5mg and 5mg pens. Our treatment pricing page shows the current breakdown clearly, with one transparent price per dose that includes the consultation, prescription, and free next-working-day delivery. No hidden charges at any dose level.

The principle worth holding onto: the right dose is the one that works for you clinically. Starting at the lowest dose to assess tolerability, then titrating thoughtfully, is how the medicine is designed to be used, not as a cost-saving measure, but as good pharmacological practice. The maintenance dose of tirzepatide page covers how that clinical endpoint is reached and what it means for ongoing treatment. NICE's appraisal of tirzepatide, TA1026, provides the evidence framework prescribers work within when making those decisions.