What dosage of Wegovy do you actually need?

The myth: you pick a dose based on how much you want to lose

This is probably the single biggest misunderstanding our prescribers hear. Patients sometimes arrive expecting to start on the highest dose because they have more weight to lose, or to stay at a lower dose because they want a "gentler" effect. Neither instinct matches how Wegovy actually works.

Dose is not calibrated to your weight-loss target. The titration schedule (0.25 mg, 0.5 mg, 1.0 mg, 1.7 mg, then 2.4 mg) exists entirely to reduce side effects during the early weeks. Semaglutide slows gastric emptying and changes how hunger signals reach the brain; your body needs time to adjust. Jumping straight to 2.4 mg would mean most people spending the first month feeling genuinely unwell. The full dose schedule for Wegovy is built around that adjustment window, not around your starting BMI or how ambitious your goals are.

Once you reach your maintenance dose, response does vary between individuals, some people see significant loss at 1.7 mg and their prescriber may judge that sufficient; others need 2.4 mg before appetite suppression really takes hold. That assessment happens at each clinical review, not in advance. Suitability for the newer 7.2 mg dose is also a prescriber decision, governed by the MHRA approval criteria. The NHS patient information for semaglutide sets this out clearly.

What the titration schedule actually looks like week by week

The licensed pathway is straightforward on paper: one pen lasts four weeks, and after each four-week period your prescriber reviews whether you move to the next dose level. In practice, a step can be held longer if side effects are still settling, that is a clinical call, not a failure.

Starting dose (weeks 1–4): 0.25 mg. Think of this as the body's introduction. Appetite changes at this stage are modest. The point is adjustment, nothing more. Weeks 5–8: 0.5 mg. Most people notice a more meaningful reduction in hunger here. Weeks 9–12: 1.0 mg. By this step, the majority of patients are seeing measurable weight change. Weeks 13–16: 1.7 mg. Weeks 17 onwards: 2.4 mg maintenance. For those who qualify, 7.2 mg is the next tier, titrated further from 2.4 mg by your prescriber in the same gradual way.

If you want to understand when and why a Wegovy dose increase is clinically appropriate, that is worth reading alongside this. Missing a dose or taking it at the wrong time of week can affect absorption; the Patient Information Leaflet and your prescriber are the right sources for guidance on those practical details.

The question of whether 2.4 mg is always the right end point

For many people it is, and the STEP 1 trial (68 weeks, semaglutide 2.4 mg versus placebo) reported an average body-weight reduction of around 15% at that dose. But clinical practice is more nuanced than a trial average. How high the Wegovy dose can go is a genuinely live question since the MHRA approved the dedicated 7.2 mg single-dose pen on 14 April 2026, initially for adults with a BMI of 30 or above. Trial data at 7.2 mg reported around 20.7% average weight reduction over 72 weeks, narrowing the gap with tirzepatide's results at higher doses considerably.

That said, higher dose does not automatically mean better outcome for every individual. Some people tolerate 2.4 mg very well and achieve their clinical goals there. Others plateau. Others experience side effects that make pushing further impractical. The dose needed for meaningful weight loss on Wegovy is genuinely individual, which is exactly why a prescriber rather than a fixed algorithm makes the call. NICE's appraisal of semaglutide for weight management, TA875, includes the recommendation to review continuation if less than 5% weight loss occurs after six months at maintenance, a useful benchmark to know about.

How to find out which dose is right for you

It starts with a free consultation, reviewed the same day by a GPhC-registered prescriber, a real clinician reading your answers, not software routing you through a decision tree. Your medical history, current medications, any contraindications, and your BMI all feed into that assessment. If Wegovy is suitable, the prescriber sets your starting dose (always 0.25 mg per the licensed schedule) and confirms when your first clinical review is due.

One practical note: if you order before 12 pm on a weekday, treatment dispatched that day arrives with DPD the next working day, in plain packaging. There is no guessing about stock or timing.

The question of Wegovy strength and the full breakdown of available doses are worth reading if you want more context before your consultation. And if cost is a factor in your thinking, the Wegovy cost page explains what a private prescription typically covers. When you are ready to take the next step, speak to our prescribers through a free consultation.