What happens when you come off Wegovy — and what side effects to expect

The first few weeks after your last pen: what is actually happening

Picture this: you take your last Wegovy injection on a Friday and by the following Tuesday the familiar mid-morning hunger is back. That is not imagination. Semaglutide has a half-life of roughly a week, meaning it takes several weeks to clear from your system entirely, but the appetite-suppressing effect begins to fade noticeably within days of missing a dose. The NHS semaglutide page explains that GLP-1 receptor agonists work partly by slowing how quickly the stomach empties and by signalling fullness to the brain; when that signal stops, the original biology reasserts itself.

For most people, the side effects of coming off Wegovy are not withdrawal symptoms in the pharmacological sense. There is no equivalent of stopping a corticosteroid or an antidepressant. What you get instead is the return of what the medicine was suppressing: hunger, cravings, and a faster gastric emptying rate. Some people also notice the GI symptoms they had while on the medicine (nausea, bloating, indigestion) begin to ease within a week or two of stopping. That is a reasonable comfort if those effects were troublesome.

The harder reality is the longer arc. The STEP 1 trial, published in the New England Journal of Medicine, followed participants who stopped semaglutide after 68 weeks and found that much of the weight lost was regained within a year. This is not a failure of character. The biology of appetite is persistent, and understanding how Wegovy's side effects and effects work together is part of making an informed choice about continuing or stopping.

When stopping is the right call, and who decides

There are legitimate clinical reasons to stop Wegovy. Pregnancy is one: the medicine is not recommended for anyone who is pregnant, breastfeeding, or actively trying to conceive, and your prescriber will advise stopping and give guidance on timing. Planned surgery is another context where your clinical team will want to know you are on a GLP-1 medicine — the NHS England guidance on weight management injections specifically notes that anaesthetists need to be informed before any procedure. A new medical diagnosis may also change the balance of risks and benefits.

Less dramatically, some people stop because of persistent side effects that do not settle, or because they have reached a stable weight and want to try maintaining it without medication. That is a conversation to have with your prescriber rather than a decision to make unilaterally, partly because stopping abruptly carries a higher risk of rapid weight regain than a planned, monitored pause. There is no licensed tapering schedule for Wegovy the way there is for some other medicines, but your prescriber can advise on the best approach for your situation and discuss whether other weight management approaches might sit alongside the transition.

Worth saying plainly: if you are stopping because the cost is suddenly unworkable, it is a better conversation to have openly with your prescriber than to just let the prescription lapse. Timing matters, and a planned pause is medically safer than an unplanned one.

When to get medical help, and what warrants urgent attention

Stopping Wegovy is not typically a medical emergency, but some symptoms do warrant a call to your GP or prescriber sooner rather than later. Severe or persistent abdominal pain that spreads to your back is one of them. The MHRA issued a Drug Safety Update in January 2026 flagging acute pancreatitis as a known, infrequent but serious risk with GLP-1 receptor agonists; that risk does not disappear the moment you stop, particularly in the first days and weeks after your last dose. Seek urgent help if that pattern of pain develops. You can report any suspected side effect, whether on the medicine or in the period after stopping, through the MHRA Yellow Card scheme.

Other things to watch for in the weeks after stopping: signs of significant dehydration if you were having ongoing GI symptoms, gallbladder-type pain (right-sided, after eating), and any mood changes that feel out of proportion. If you want a fuller picture of what to expect while on the medicine, our guide to the side effects of taking Wegovy covers each stage of treatment in detail. A rapid return of appetite, on the other hand, is almost universal and is itself a clinical reason to have a follow-up conversation rather than to manage silently. Our prescribers discuss Wegovy's side effect profile thoroughly before and during treatment, and that conversation does not have to end the moment a prescription does. Our support team is available seven days a week if you have questions between consultations.

Thinking about restarting, or switching

Restarting Wegovy after a break is possible, but the clinical approach is not simply to jump back to the dose you were on. Depending on how long the gap was, your prescriber will usually recommend restarting at a lower dose and re-titrating, for the same tolerability reasons that apply when beginning treatment. It is also worth reading about what happens when you experience no side effects on Wegovy, since some people restarting a second course find their response differs from the first time. The same applies to anyone considering how the side effect burden at each dose might differ on a second course.

Some people stopping Wegovy use the moment to explore whether a different licensed treatment might suit them better, including tirzepatide (Mounjaro), which works on a dual pathway. Others find that their weight stays stable after stopping and that lifestyle changes made during treatment have held. The honest position is that outcomes vary considerably and no one can predict in advance which group any individual falls into. If you want to explore your options, including whether restarting or transitioning to a different medicine makes sense clinically, a free consultation with our prescribers is the place to start. They review each case individually, on the same day, and will give you a straight answer about what is and is not suitable for you. Our clinical team brings the same rigour to restart consultations as to new patients.