How long should you use Wegovy, and what happens when you stop?

You're six months in and wondering: is there a finish line?

Picture this. Your Wegovy pen arrives in a plain box, tracked by DPD, and by now the routine is almost automatic. The question that's started nagging is not how to take it, but how long you should keep taking it. That's the right question to ask, and it has a real answer, even if it's a conditional one.

NICE's appraisal of semaglutide for weight management, TA875, recommends it be used for a maximum of two years within a specialist service that also provides dietary guidance and increased-activity support. That two-year cap reflects what the pivotal trial evidence covered: the STEP 1 trial, published in the New England Journal of Medicine, ran for 68 weeks, showing an average body-weight reduction of around 15% at the 2.4mg maintenance dose. Two years is not an arbitrary cut-off; it is roughly the horizon of the strong evidence base on which the licence was granted.

That does not mean treatment ends automatically at 24 months. It means ongoing use beyond that point is not covered by the current NICE recommendation and would require a case-by-case clinical assessment. For many people, two years of treatment alongside genuine lifestyle change is enough to shift the trajectory meaningfully. For others, the biology of weight regulation means the medicine remains part of the picture for longer, discussed openly with their prescriber.

The five-percent checkpoint: what the guidance actually says about stopping

Before the two-year question even becomes relevant, there is an earlier review built into the guidance. If you have not lost at least 5% of your starting body weight after six months at the highest dose you can tolerate, NICE recommends that continuing Wegovy should be reviewed. In other words, the medicine should be demonstrably working before you carry it past that point.

This checkpoint exists because semaglutide suppresses appetite through GLP-1 receptor activity, and some people respond less strongly than others. The lack of a meaningful response at six months is a signal worth heeding, not a failure, but a reason to talk to your prescriber about what else might help. If you are responding well, that same review is an opportunity to confirm that continuing makes clinical sense.

The NHS medicines page for semaglutide sets out the full picture of how the medicine works and what to expect at different stages, and is worth reading alongside any conversation you have with your clinical team. For anyone thinking about how long to take Wegovy in practical terms, the honest framing is: as long as it is working, the clinical rationale remains, and your prescriber agrees it is appropriate.

What the evidence shows when people stop

The data on stopping is sobering, and you deserve the straight version of it. A withdrawal study from the STEP programme showed that participants who had lost significant weight on semaglutide 2.4mg regained most of it within 52 weeks of stopping, without continuing lifestyle intervention. Obesity is a chronic condition with a strong biological drive toward weight regain; the medicine suppresses some of that drive, but it does not reprogram it permanently.

That does not mean you must stay on Wegovy indefinitely, but it does mean the question of stopping deserves the same clinical attention as the question of starting. Reducing calories, building sustainable activity habits, and addressing the behavioural patterns that surround eating all matter more once the pharmacological support is removed. A prescriber who knows your history can help you time any transition sensibly, rather than stopping abruptly. If you are still working through how long you should take Wegovy, that question sits right at the heart of what the Wegovy pillar on this site covers in full.

If you are weighing up what longer-term treatment looks like financially and practically, our treatment overview explains what a private prescription service includes at each stage, which is a reasonable thing to understand before your next review conversation.

Duration decisions in practice: who makes them, and how

A question our prescribers hear regularly is: will my doctor just keep prescribing forever? The answer is no, and that is intentional. Every repeat order at nume is clinically re-reviewed before it is approved. That means a prescriber reads your update, checks whether the treatment is still working, and confirms the clinical rationale before the next supply is authorised. There are no automatic renewals.

What a prescriber will consider at each review: how much weight you have lost to date, whether the weight-related conditions that justified prescribing are still present or have improved, whether you have developed any side effects that change the benefit-risk picture, and whether you are engaged with the lifestyle support that makes treatment more likely to lead to lasting change. None of that is adversarial; it is what good prescribing looks like for a medicine with this profile.

For anyone wondering about how long you should be on Wegovy, that is a related but distinct question from how quickly you will see results, and one worth reading about separately if you are still in the early months. If you are at the stage where duration is the live question, and specifically asking how long you should stay on Wegovy given your progress so far, speaking to a prescriber is the most useful next step, and our guide on how long you should take semaglutide covers the broader clinical picture in detail. You can start a free consultation with our prescribers and raise this directly.