How often do you need to take Wegovy — and what affects that schedule?

Why once a week, and does the day actually matter?

Semaglutide has a long half-life, it stays active in your body for roughly a week after each dose, which is precisely why a weekly injection is enough. That biological staying-power means your levels remain relatively steady between doses, avoiding the peaks and troughs that a daily medicine might create. The practical upside is a predictable rhythm: choose a day that fits your week and you can largely put the schedule out of your mind.

The specific day is yours to pick. Many people anchor it to something fixed (a Sunday evening, a Thursday morning) so it becomes habit rather than effort. The one rule is consistency: switching days occasionally is possible within a narrow window, but drifting gradually shifts your effective dose timing, which your prescriber would want to know about. If you find the current day awkward, talk to your clinical team rather than quietly changing it.

It is worth knowing that the broader semaglutide family includes both Ozempic and Wegovy, the same molecule, different licences. Wegovy is licensed for weight management; Ozempic for type 2 diabetes. The weekly schedule applies to both, but the dose ranges differ, and they are not interchangeable.

What the titration schedule actually involves, and why it starts low

If you have been wondering why the first pen contains 0.25 mg rather than the full therapeutic amount, that is intentional. The starting dose is about helping your digestive system adjust to a GLP-1 receptor agonist, not about producing weight loss. Nausea and gastrointestinal discomfort are most common in the early weeks; beginning low and stepping up gradually significantly reduces how pronounced those effects tend to be.

The standard progression runs: 0.25 mg for four weeks, then 0.5 mg, then 1.0 mg, then 1.7 mg, before reaching the 2.4 mg maintenance dose, a journey of around 16 to 20 weeks in total. Your prescriber decides whether to move you up at each review or to stay at a dose longer if side effects have been significant. That flexibility exists for a reason. Pushing faster through the schedule to reach a higher dose more quickly is not the same as getting better results sooner, and it is not a decision to make unilaterally.

A higher 7.2 mg maintenance dose was approved by the MHRA in April 2026, initially available as three 2.4 mg pens per week and later as a dedicated single-dose pen. Whether this higher dose is appropriate for you is a clinical question, eligibility is confirmed at consultation, not assumed from the dose number alone. You can read more about Wegovy's indications and the 7.2 mg approval if you want the background before speaking to a prescriber.

The decision most people face: what happens if a dose is late or missed?

Life happens. A dose gets forgotten, or a pen is stuck in transit. The practical guidance from the NHS's semaglutide information page is clear: if fewer than five days have passed since your scheduled injection, take it as soon as you remember. If five or more days have passed, skip that dose and carry on from your next scheduled day as normal. Do not take two doses to make up for a missed one.

This is genuinely one of those situations where reading the Patient Information Leaflet in your pen pack is the right move, not a quick search online. The leaflet reflects the specific formulation you have been prescribed; general advice online (including here) cannot account for individual circumstances.

For people experiencing side effects like trapped wind or bloating on Wegovy, knowing that these tend to peak around dose increases can help you plan. If side effects are persistent or feel unmanageable, contact your prescriber rather than reducing or skipping doses on your own.

Frequency, cost and what that means for your supply

One injection per week means four pens per month in most supply arrangements, and if you want a fuller explanation of how often you take Wegovy and why the schedule is structured the way it is, that is covered in detail separately. If you are thinking through the financial picture alongside the clinical one, our Wegovy price comparison page sets out what the UK private market looks like and what a legitimate price should include.

NICE's appraisal of semaglutide for weight management, TA875, recommends its use within specialist services for up to two years, so if you are weighing the NHS route against a private prescription, the frequency of treatment is the same either way. What differs is waiting times, eligibility thresholds and the support infrastructure around you.

Feeling clear on the schedule but not sure whether you meet the clinical criteria? A common follow-on question at this point is how often you use Wegovy across a treatment course, including what happens after the two-year period. Our prescribers work through exactly that at your free consultation, no commitment required, just a proper clinical picture.