Can you stop Wegovy at any time, and what happens when you do?

Does stopping Wegovy cause any withdrawal effects?

This is one of the most common worries people bring to our prescribers, and it's worth setting the record straight. Wegovy does not create chemical dependency. When you stop, your body doesn't go through the kind of withdrawal associated with some other medicines. There's no rebound spike in heart rate, no insomnia cascade, no shaking hands.

What you will notice, usually within a few days to a couple of weeks, is that your appetite comes back. Semaglutide works by mimicking a gut hormone called GLP-1, which slows gastric emptying and signals fullness to the brain. Once the medicine has cleared your system, those signals quiet down and hunger reasserts itself at its pre-treatment level. For many people that feels abrupt, because they'd forgotten how persistent appetite used to be. That's not withdrawal, it's the return of baseline.

Some people also notice that food feels more appealing, portions feel less satisfying, and energy levels dip slightly as calorie intake adjusts. These are physiological effects of the medicine leaving, not signs that something has gone wrong. The NHS medicines guidance on semaglutide covers what to expect when treatment changes, and it's a useful reference to read before you stop.

What does the evidence say about weight regain after stopping?

Honestly, the evidence is sobering, and being upfront about it is more useful than glossing over it. The STEP 1 extension study followed participants for a year after they stopped semaglutide 2.4mg. On average, participants regained about two-thirds of the weight they had lost during the treatment period. Cardiovascular risk markers that had improved also largely reverted. This isn't a flaw in the medicine; it reflects the biology of obesity as a chronic condition rather than a short course.

That picture changes when people have built durable habits around food and activity during treatment. The medicine creates a window (reduced hunger, better portion regulation, more energy) but the habits developed inside that window are what determine what happens next. People who've worked with a dietitian or weight management programme during treatment tend to hold more of their progress.

If you want to dig deeper into the research before making any decisions, our collection of Wegovy articles covers the trial evidence and practical questions in plain terms, alongside our Wegovy overview page, which sets out the STEP 1 evidence in plain terms.

When might stopping Wegovy be the right call?

There are several situations where stopping is clearly the right decision, and others where it's worth a careful conversation rather than a snap choice.

Stopping is appropriate if you become pregnant, are trying to conceive, or are breastfeeding, Wegovy is not recommended in any of these situations. It's also the right move if you develop a serious side effect that your prescriber judges warrants stopping, such as symptoms pointing to pancreatitis (severe persistent stomach pain, especially pain that radiates towards the back). The MHRA has highlighted acute pancreatitis as a known, though infrequent, risk with GLP-1 medicines, and any such symptoms need urgent medical attention rather than a watch-and-wait approach.

On the other side, some people consider stopping because of manageable nausea, cost, or a feeling that progress has stalled. These are worth discussing with your prescriber before acting. Nausea often settles after a few weeks at a new dose. Stalled progress sometimes reflects a titration question. And on cost, it's fair to weigh up what treatment is actually delivering, our guide to Wegovy pricing in the UK explains what's typically included in a treatment price and why the cheapest option isn't always the straightforward saving it appears.

NICE's appraisal of semaglutide, NICE TA875, recommends it for a maximum of two years within a specialist weight management service, with a review at six months to check that meaningful progress has been made. That built-in ceiling means planned stopping is part of the NHS pathway, it's not a failure of the treatment.

How do you actually stop, abruptly or gradually?

There is no fixed clinical requirement to taper Wegovy down through the dose steps before stopping. Unlike some medicines, semaglutide doesn't require a structured wean for safety reasons. That said, whether to stop at your current dose or step down first is something your prescriber can help you decide based on your situation, particularly if you're at a higher dose and want to reduce GI effects during the transition.

Practically speaking, your last injection is simply your last injection. The medicine has a half-life of about one week, so it takes roughly five weeks to clear your system fully. Appetite and the other effects return gradually over that window rather than all at once, which gives some time to reinforce the habits you've built.

If you're thinking about pausing rather than stopping permanently, that's a different question with its own considerations. The practicalities of pausing and restarting Wegovy are worth reading before you decide, as is our broader guide to stopping Wegovy for people weighing up their options. If you'd like to explore what clinically supervised treatment at nume involves, our prescribers are available for a free consultation, no commitment required. The step-by-step process for stopping Wegovy is also covered separately if you want the practical detail.