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SemaglutideActs on GLP-1Once weekly

Wegovy

A once-weekly injection that helps suppress appetite and reduce calorie intake, prescribed and supported by UK clinicians.

From£200/mo
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Wegovy injection pen
Clinically proven results

Lose up to 16.9% of your body weight*

In a 68-week clinical trial, people who stayed on the highest dose of Wegovy lost an average of 16.9% of their body weight, alongside a reduced-calorie diet and more exercise.

Average body weight changeIllustrative trend
0%−16.9%Week 0Week 23Week 45Week 68
68 weeksClinical trial length
Once weeklyOne injection a week
The science

How Wegovy works

Its active ingredient, semaglutide, mimics GLP-1, a natural gut hormone that tells your body when you've had enough to eat.

  • Signals fullness to your brain

    Helps quieten hunger signals, so you feel satisfied with less food.

  • Slows digestion

    Food leaves your stomach more slowly, so you stay full for longer after eating.

  • Steadies blood sugar

    Helps your body release insulin when blood sugar rises, keeping levels steadier after meals.

  • Lasts all week

    Semaglutide works like GLP-1 but stays active far longer, so one injection covers the whole week.

Dosing

What is the dosing schedule for Wegovy?

You start on the lowest dose and step up gradually, usually every 4 weeks, so your body can adjust.

Stepping up at your own pace

Most people build up to 2.4 mg. If that dose doesn't suit you, your prescriber may keep you on 1.7 mg instead.

  1. 0.25 mg
    Starting dose
    Weeks 1–4
  2. 0.5 mg
    Weeks 5–8
  3. 1 mg
    Weeks 9–12
  4. 1.7 mg
    Weeks 13–16
  5. 2.4 mg
    Maintenance option
    Week 17+

Shown at the earliest pace — each step lasts at least 4 weeks. Your prescriber sets your schedule, and 2.4 mg is the usual maintenance dose.

Frequently Asked Questions

Yes — these are prescription medicines, not supplements. A UK-registered prescriber reviews the medical information you give us, and a prescription is issued only where they judge the treatment to be appropriate and safe for you.

Treatment pairs a weight-loss medication that helps curb your appetite with the everyday changes that make the results last — regular activity and better nutrition. The medication gives you a foundation to build those habits on, rather than replacing them.

Once your questionnaire is submitted, a prescriber goes through your answers. If anything is unclear or missing, we'll get in touch before any decision is reached. How long this takes depends on your individual circumstances.

Every fee is shown to you upfront, before you decide whether to go ahead. Where a prescription is issued, you'll see the full treatment cost laid out clearly. Nothing is charged until you confirm that you want to continue.

No — we can't promise that, and you should be wary of anyone who does. Results differ from one person to the next. Prescription medication is one part of a wider plan that also relies on a healthy diet, staying active, and ongoing support.

Every medicine carries the possibility of side effects. With weight-management medicines, the ones reported most often affect the digestive system — nausea, vomiting or diarrhoea, for example. Before you begin, we provide full safety information along with the official patient information leaflet for your treatment.

Yes, if you're happy for us to. With your consent we'll pass relevant prescribing and monitoring details on to your GP, so your ongoing care stays joined up and safe.

Prices are per month and depend on the dose you're prescribed. Treatment requires an online consultation, and a prescriber will decide whether it's appropriate for you.

*STEP 1 clinical trial (Wilding et al., New England Journal of Medicine, 2021) in adults with obesity, or with overweight and at least one weight-related condition. Participants who stayed on semaglutide 2.4 mg once weekly for 68 weeks, alongside a reduced-calorie diet and increased physical activity, lost an average of 16.9% of their body weight. Individual results vary. The graph shows the overall shape of the trend, not individual data points.

Wegovy is a registered trademark of Novo Nordisk A/S. Slimn is not affiliated with or endorsed by Novo Nordisk A/S.