How Long Do You Take Wegovy for Weight Loss?

What the 68-week STEP 1 trial tells us about the timeline

The foundation for everything we know about how long to take Wegovy for weight loss is the STEP 1 trial, published in the New England Journal of Medicine. Over 68 weeks, adults with obesity who took semaglutide 2.4 mg alongside lifestyle changes lost an average of around 15% of their body weight. That figure is a trial average, individual responses varied, some people losing considerably more, others less.

The 68-week figure matters because it shapes how prescribers and regulators think about duration. It is long enough to demonstrate a sustained effect beyond the initial dose-escalation period, yet it tells us nothing on its own about what happens at year three or five. Subsequent studies, including a withdrawal extension of STEP 1, found that participants who stopped semaglutide after 68 weeks regained most of the lost weight within a year, underlining that the medicine works while you take it, not as a one-off course.

Titration itself takes time. Treatment starts at 0.25 mg weekly and steps up roughly every four weeks under prescriber guidance, reaching the 2.4 mg maintenance dose after about five months. If you want a clear picture of how long Wegovy weight loss actually takes, it helps to understand that meaningful results tend to accelerate once the maintenance dose is established, so expecting significant changes in the first few weeks at the lower doses isn't realistic. Our page on how long Wegovy takes to work for weight loss covers that early timeline in more detail.

NICE's two-year cap and what it means for NHS versus private patients

NICE's technology appraisal TA875 recommends semaglutide on the NHS for a maximum of two years, and only within a specialist weight management service offering multidisciplinary support. That two-year ceiling is specific to NHS commissioning: it reflects budget-impact modelling and the requirement for specialist oversight, not a clinical finding that the medicine stops working or becomes unsafe after 24 months.

For private patients, NICE's two-year rule does not apply in the same way. A GPhC-registered independent prescriber can continue treatment beyond two years if the person is still benefiting, tolerating the medicine well, and clinical review supports it, and our page on how long you can stay on Wegovy for weight loss explains what that ongoing private use can look like in practice. Every repeat order at a regulated service like ours at nume is reviewed before dispatch, not rubber-stamped. If at six months on the maintenance dose a patient has not lost at least 5% of their starting weight, NICE guidance supports stopping and reassessing.

If you are curious about what ongoing Wegovy treatment costs privately, our Wegovy prices page sets out what an all-inclusive private prescription involves. There are no hidden fees or subscriptions, each supply is reviewed and dispensed individually.

Stopping Wegovy: planned endings and what to expect

How long you can stay on Wegovy is partly a biological question and partly a practical one. The biology is clear: weight regain after stopping is well-documented. The STEP 1 withdrawal extension found that one year after stopping, participants had regained on average about two-thirds of the weight they had lost. That is not a failure of the medicine, appetite regulation returns to its pre-treatment baseline when the drug clears, which is why ending treatment without a plan tends to undo the progress made.

Planned stopping looks different. Prescribers typically want to see stable weight, solid lifestyle habits and a realistic maintenance strategy in place before stepping someone down. Some patients taper rather than stop abruptly. Others switch to an alternative treatment, and questions about how long you can be on Wegovy for weight loss often come up naturally at that point; you can also read about the broader weight-loss treatment options available privately if that conversation is relevant to you.

One practical note: because each dose step requires a prescriber decision, the question of how long to take Wegovy is never really answered once and then filed away. It comes up again every time you reorder. A prescriber who has reviewed your notes the same day you place your repeat (rather than a system that processes it automatically) is better placed to flag when that conversation needs to happen. Our clinical team, led by our clinical lead, takes that review seriously at every supply.

For a broader picture of how duration fits into the full arc of Wegovy treatment, our page on how long you can use Wegovy for weight loss covers the longer-term considerations in depth, including what ongoing private use looks like beyond the NHS two-year limit.