Wegovy: how long should you take it, and what happens when you stop?

The biggest misconception: that Wegovy is a short course

A lot of people come to treatment expecting something like a course of antibiotics, take it for a defined period, finish, move on. That framing does not fit how semaglutide works. Obesity is a chronic condition shaped by hormones, appetite signals and metabolic set points, not a problem that is corrected once and stays corrected. Wegovy acts on GLP-1 receptors to reduce appetite and slow gastric emptying; when the medicine is stopped, those effects stop too.

The STEP 1 trial, published in the New England Journal of Medicine, showed average weight loss of around 15% over 68 weeks at the 2.4mg maintenance dose. A follow-on withdrawal study tracked participants after they stopped: within a year, most had regained roughly two-thirds of what they had lost. Appetite increased, weight crept back. The researchers described this as consistent with what you would expect if you stopped treating any other chronic condition.

That does not mean everyone stays on it forever. Some people reach a stable weight, make lasting changes to their relationship with food and, in discussion with their prescriber, taper off with close monitoring. But that decision belongs to the clinical conversation, not to a fixed timetable. If you are asking how long you should take semaglutide, including what the evidence says about ongoing treatment, our guide covers the key considerations in detail.

The NICE two-year rule: what it covers and what it does not

The NICE recommendation for Wegovy (TA875) says semaglutide should be used for a maximum of two years when funded through NHS specialist weight management services. This is a commissioning boundary, not a licence condition. It exists partly because the longest trial data available at the time of the appraisal ran to 68 weeks, and partly to manage NHS resources across a specialist multidisciplinary pathway.

Private prescribing sits outside that framework. The Wegovy SmPC, listed on the Electronic Medicines Compendium, does not state a maximum duration of treatment. What it does say is that treatment should be assessed at six months: if a patient has not lost at least 5% of their body weight on the maintenance dose, continuing is unlikely to be appropriate. Beyond six months, ongoing benefit and tolerability are reviewed regularly.

It is also worth knowing that NICE's guidance on how long you should be on Wegovy is distinct from the question of how long the medicine is licensed for, a distinction worth understanding before assuming a two-year finish line applies to you personally.

What clinical review at each repeat actually involves

Stopping treatment is not the only response when progress slows. A prescriber may look at whether you are on the right dose, whether side effects have been managed well, whether anything in your health picture has changed, and whether the lifestyle changes running alongside treatment are still in place. These are the things that a genuine clinical review addresses.

At nume, a real clinician (not automated software) reads your answers and assesses your case before every repeat is approved. The same clinical scrutiny that applies at the start applies at month six and at month twelve. Your pen arrives in a plain, unbranded box via DPD with tracking, but the step before dispatch is always prescriber review. There is no auto-renewal; each order requires fresh assessment.

Questions about cost over an extended period are fair ones. Our Wegovy pricing page lays out what a full month of treatment includes, with no hidden fees, so you can plan honestly. For a broader look at the treatment itself, our Wegovy overview page covers the medicine, the evidence and who it is licensed for.

Planning a longer-term treatment path

If you are already on semaglutide and wondering about duration, or transferring from another provider and unsure where you stand, the practical question is: what does your prescriber say, and is the evidence of ongoing benefit there? Weight management guidance from NHS England is clear that these medicines work best alongside dietary change and increased activity, not instead of them. That wraparound support matters most over the long term, because it builds habits that do not depend entirely on the medicine.

For people thinking about how long to take Wegovy for their specific goals, the honest answer is: as long as it is producing meaningful benefit, being tolerated well and remaining clinically appropriate, and our guide to how long you should use Wegovy walks through the evidence and practical considerations to help you have that conversation with your prescriber. The decision is reviewed, not fixed. If you would like to talk through your situation with a prescriber, start your free consultation and our clinical team will look at your case the same day.