How the semaglutide dosing schedule for weight loss actually works

Why the dose starts low and moves up gradually

There's a misconception worth clearing up: some people assume they'll be started at the dose that produces the biggest results and work down if things get rough. It's the other way around. Semaglutide treatment begins at 0.25 mg precisely because side effects (nausea in particular) are most disruptive early on, and a lower starting point gives the gut a chance to settle. The 0.25 mg dose isn't expected to drive meaningful weight loss on its own. Its job is adjustment.

From there, most people move up every four weeks: 0.5 mg, then 1.0 mg, then 1.7 mg, and eventually 2.4 mg as the standard maintenance dose for weight management. That's a minimum of sixteen weeks before reaching 2.4 mg, and that timeline exists in both the licensed schedule and the trial protocol. If side effects are significant at any step, your prescriber may hold you at the current dose for longer before moving up. The 2.4 mg maintenance dose is where the weight-loss evidence is strongest.

None of this titration is self-directed. The NHS semaglutide guidance is clear that dose changes are made by a prescriber, and the Patient Information Leaflet covers timing precisely. What your prescriber weighs up isn't just how many weeks have passed, it's whether your system has genuinely adapted.

What the evidence says at different dose levels

The STEP 1 trial, published in the New England Journal of Medicine, ran for 68 weeks and is the cornerstone evidence for semaglutide in weight management. At 2.4 mg, participants lost around 15% of body weight on average alongside a reduced-calorie diet and increased activity. Those are group averages (individual results varied) but the signal at the full maintenance dose was substantial.

Not everyone in any trial reached the top dose, and some people find a meaningful response at an earlier step. The 1 mg dose, for instance, sits at the midpoint of the schedule and some patients stabilise there if tolerability at higher doses remains difficult. Lower doses can still produce benefit; they just tend to produce less of it on average than the full maintenance dose.

The newer 7.2 mg dose adds another chapter. The MHRA approved it in January 2026, and trial data reported around 20.7% average weight loss over 72 weeks, approaching the results seen with the highest doses of tirzepatide. A dedicated single-dose 7.2 mg pen was cleared on 14 April 2026, designed as one pre-set weekly injection. For context, the starting dose and titration steps remain the same regardless of whether the end goal is 2.4 mg or 7.2 mg.

How your prescriber decides which dose is right for you

The decision isn't made once at the start and then forgotten. A sensible semaglutide dosing plan for weight loss involves ongoing review: how much weight you've lost, whether side effects have resolved, whether you've reached a plateau, and whether the current dose is genuinely the highest you can tolerate without significant discomfort. That's the clinical picture your prescriber builds over time.

At nume (sorry, at our pharmacy) every repeat order is clinically re-reviewed before it's dispensed. There are no auto-renewals. A prescriber looks at your progress before anything is approved. That process matters particularly around dose increases, because a jump from one level to the next isn't a formality, it's a clinical decision.

For people wondering about the practical shape of a dose chart for weight loss on semaglutide: the steps are fixed in the licensed schedule, but the pace is not. Some patients take six months to reach 2.4 mg. Others move through more quickly. What matters isn't speed through the schedule; it's arriving at the right maintenance dose sustainably. You can read more about all the Wegovy dose options or explore the full picture of what Wegovy treatment involves. If you're weighing up the injectable against the newer oral option, our treatment overview page covers both.

Access routes and what to do next

Semaglutide for weight loss is licensed under the brand name Wegovy. It is a prescription-only medicine, and the only legal route to it in the UK is through a prescriber who assesses your suitability first. Wegovy is available through NHS specialist weight management services under NICE guidance TA875, though waiting lists are commonly long. Private routes through a GPhC-registered online pharmacy are available to people who meet the licensed eligibility criteria and don't want to wait.

If you're comparing what's available privately, it's worth understanding how to get Wegovy online safely, including how to check that any pharmacy you use is registered with the GPhC. The weight-loss treatment landscape has changed considerably in the past two years, and the dose schedule is only one part of the picture. The right dose for weight loss on semaglutide is, ultimately, the one your prescriber confirms suits you, not the one a chart suggests should be next.