How long should I take semaglutide, and what happens when you stop?

Is there a recommended minimum time to stay on semaglutide?

Clinical guidance does not set a single minimum, but it does set a meaningful review point. NICE's appraisal of semaglutide (Wegovy) for weight management advises that treatment should be reviewed if a person has not lost at least 5% of their starting body weight after six months on the full maintenance dose. That review point exists because the medicine needs time to work, the dose titration phase alone takes several months, and the body's response to appetite changes unfolds gradually.

In practice, six months on maintenance is rarely the end of the story for people who are responding well. The STEP 1 trial, which ran for 68 weeks, showed continued weight reduction throughout the study period, not just in the early weeks. Stopping at four or five months would mean cutting short the period when the medicine is doing its most productive work.

For privately prescribed treatment, duration is reviewed at every repeat order, there is no automatic continuation. A prescriber looks at weight trend, tolerability and overall health before each supply. That is quite different from collecting a repeat with no clinical input, which is a red flag worth noting when you are choosing where to get treatment.

What does NICE say about the two-year limit for NHS patients?

The NICE guidance on semaglutide specifies that NHS prescribing through specialist weight management services should be for a maximum of two years. This cap applies within the NHS commissioning framework, it reflects both resource allocation and the evidence base available at the time of the appraisal. It does not mean the medicine stops working at two years, or that continuing privately after that point is clinically wrong.

For people prescribed semaglutide privately, there is no regulatory two-year ceiling. If you are weighing up how long you should be on semaglutide, the answer is a clinical one: is the treatment still producing benefit, is it still tolerated well, and are there any health changes that alter the picture? Our clinical team reviews each case individually before any repeat supply, no prescription is renewed on autopilot.

If you are partway through NHS treatment and wondering about your options, it is worth reading about how long to stay on Wegovy in more detail, including what happens as you approach the two-year mark and what the evidence says about transition.

What happens to weight after stopping semaglutide?

This is the question that tends to worry people most, and the evidence is honest about it. The STEP 1 trial included a one-year follow-up after participants stopped semaglutide: weight returned in the majority of cases, reaching roughly two-thirds of the lost weight within twelve months of stopping. The biology behind this is well-understood, semaglutide reduces appetite via GLP-1 receptor activation, and when the medicine is withdrawn, appetite signals revert towards baseline.

That does not mean treatment should continue indefinitely regardless of circumstances. It does mean that stopping should be a planned, gradual decision with your prescriber, not an abrupt one. It also reinforces why lifestyle changes (eating patterns, activity, sleep, stress) matter alongside the medicine rather than instead of it. The people who maintained the most weight after the trial were those who had built sustainable habits during treatment.

Thinking about what stopping might look like is a reasonable part of planning ahead. The page on how long you can take semaglutide covers the practical and clinical factors in more depth, including how prescribers approach tapering and what monitoring looks like over time.

How is the right duration worked out for an individual?

There is no formula that spits out a number. A prescriber weighing up how long you should stay on semaglutide will be looking at several things together: the degree of weight reduction achieved, whether weight has plateaued or is still tracking in the right direction, how well you are tolerating the dose, any changes in comorbidities such as blood pressure or blood glucose, and your own goals for the next phase.

The dose itself matters too. Reaching the 2.4mg maintenance dose (and now, with the Wegovy 7.2mg pen approved by the MHRA in 2026, the option of a higher maintenance dose for eligible patients) takes several months of careful titration. If you are thinking about how long you should take Wegovy, duration planning should account for that lead-in time, since someone who has only recently reached maintenance is in a different position from someone who has been on it for a year.

Cost is a real factor for people on private treatment, and it is reasonable to ask about it. The Wegovy price comparison page sets out what private treatment typically costs in the UK and what a transparent price should include. For the purposes of duration, what matters is that clinical oversight continues for as long as you are taking the medicine, reducing supervision to reduce cost is not a sensible trade-off for a prescription-only treatment. If you want to explore what a clinically supervised programme looks like in practice, our treatment overview explains the approach. The NHS semaglutide page is also a reliable reference for what to expect over time.