How long can you stay on Wegovy, and what does the evidence actually say?

The myth: Wegovy is a short course you take until you hit your goal weight

A lot of people start Wegovy thinking it works like a course of antibiotics, you take it, you lose the weight, you stop. The trial data and clinical guidance tell a different story. Semaglutide works by acting on GLP-1 receptors that regulate appetite and gastric emptying; when you stop the medicine, those effects stop too. The STEP 1 trial, published in the New England Journal of Medicine, followed participants after they discontinued 2.4mg semaglutide and found that much of the weight lost was regained within a year. That is not a failure of the person. It reflects how the medicine interacts with the biology of weight regulation. The honest framing is that obesity is a long-term condition, and treatment timelines reflect that. Understanding how long you can stay on Wegovy is therefore less about a finishing line and more about a clinical plan.

If you are wondering about the broader question of how long semaglutide can be taken in general, the duration question across semaglutide formulations covers that ground in detail.

What NICE guidance actually says about treatment duration

For NHS patients, the answer is specific. NICE technology appraisal TA875 recommends semaglutide (Wegovy) for a maximum of two years, within a specialist weight management service that provides multidisciplinary support alongside the medicine. That two-year ceiling reflects both the trial data available at the time of appraisal and cost-effectiveness modelling for NHS commissioning. It is not a safety ceiling. NICE also says that if someone has not lost at least 5% of their body weight after six months on the maintenance dose, continuing treatment should be reviewed. The logic is straightforward: the medicine is working for most people by then, and if it is not, the risk-benefit calculation shifts.

NHS eligibility criteria are layered and phased, so many people who could benefit from Wegovy face long waits or do not currently qualify through their GP or specialist service. Wegovy's licensing and NHS status are covered in full on our treatment overview if you want the current access picture.

How long can you stay on Wegovy privately?

Private prescriptions are not bound by the NICE two-year commissioning rule. What governs duration in private practice is the medicine's licensed Summary of Product Characteristics, clinical judgement, and ongoing review of how the patient is responding. There is no regulatory clock that stops at 24 months. That said, a responsible private prescriber will still review whether treatment remains appropriate at each repeat, checking weight, side effects, any changes in health, and whether the benefits continue to justify it. At nume, every repeat order goes through a clinical review by a GPhC-registered Independent Prescriber before anything is dispensed. No auto-renewals, no subscriptions. If the evidence supports continuing, it continues; if not, the prescriber discusses alternatives.

The question of how long you can be on Wegovy is explored further on a dedicated page for that angle, including what ongoing monitoring looks like in practice.

Planning for what comes next

Whether you are approaching the two-year mark on an NHS pathway or reassessing your private prescription, the question of stopping deserves proper thought. Stopping abruptly without a plan tends to result in appetite returning relatively quickly. A gradual taper, supported by dietary habits built during treatment, gives you the best chance of sustaining results, though the specifics of how to approach that are a conversation for your prescriber, not a protocol to follow from a webpage. Our guide to stopping Wegovy safely outlines what a managed end to treatment involves.

It is also worth knowing that Wegovy's licensed dose range expanded in 2026. The MHRA approved a 7.2mg maintenance dose, first as three 2.4mg pens weekly, then as a dedicated single-dose pen on 14 April 2026. For patients who tolerated lower doses well but wanted stronger results, this option may affect how a prescriber thinks about both continuation and duration. Availability at each dose is confirmed through consultation rather than assumed. If you want to understand how quickly Wegovy typically starts working, that context sits alongside the duration question when you are mapping out a treatment plan.

If you are weighing up treatment options more broadly, our weight-loss treatment overview sets out what is licensed in the UK and how different medicines compare. And if you are ready to talk through your own situation with a prescriber, you can start a free consultation with our clinical team today.