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Start journey Learn moreWegovy (semaglutide) is injected once a week — the same day each week, every week, for as long as your prescriber continues treatment. That weekly rhythm is fixed by the licensed schedule, which begins at a low dose and increases gradually over several months before settling at the maintenance level. Like all prescription-only medicines, Wegovy requires a clinical assessment before it can be prescribed; your prescriber decides whether the schedule is right for your situation and adjusts it if needed. The NHS semaglutide medicines page lays out the standard pattern clearly if you want a plain-language starting point.
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Semaglutide has a long half-life (roughly one week in the body) which is why it was designed as a once-weekly injection. That slow elimination means concentrations stay relatively steady between doses, reducing the peaks and troughs that can make side effects harder to manage. It also makes the routine genuinely manageable. Missing a day doesn't matter in the same way it would with a daily medicine; what matters is consistency across weeks.
The injection itself goes under the skin (the abdomen, outer thigh, or upper arm all work) and the site should be rotated each time. The pen is pre-filled and comes with a pre-attached needle, so there is no drawing up of liquid or assembly required. If you are newer to self-injection and want to know more about the practicalities, the step-by-step guide to taking Wegovy shots covers the process in detail.
A question our prescribers hear most weeks is whether it matters which day you choose. It genuinely doesn't, pick whichever day fits your life. What does matter is sticking to it. Set a phone reminder for the first few weeks and the habit tends to take care of itself after that.
The licensed schedule begins at 0.25 mg for the first four weeks. That isn't a therapeutic dose in the sense of driving weight loss, it is a tolerability stage, letting your system adjust to the medicine before the dose climbs. From there, the typical progression is: 0.25 mg (weeks 1–4) → 0.5 mg (weeks 5–8) → 1.0 mg (weeks 9–12) → 1.7 mg (weeks 13–16) → 2.4 mg maintenance from week 17 onward.
Reaching the standard 2.4 mg maintenance dose takes around four months. If side effects are uncomfortable at any rung, your prescriber may hold the dose at that level for an extra four weeks before moving up. The full guide to Wegovy dosing frequency goes into more depth on what to do if a step-up is delayed. For people now prescribed the newer 7.2 mg pen (approved by the MHRA in April 2026 for adults with a BMI of 30 or above) the titration continues beyond 2.4 mg, though the same principle applies: one step at a time, clinically reviewed.
Skipping ahead is not advisable. The gradual approach is there because the gastrointestinal side effects of semaglutide (nausea, loose stools, stomach discomfort) are most pronounced at higher doses and most manageable when the body has had time to adjust. If you are curious about what stomach-related effects to expect and how to handle them, the guide to Wegovy and tummy ache is a practical read.
Life doesn't always cooperate with fixed schedules. If you miss a dose and remember within five days of the missed injection, the guidance is to take it as soon as possible and then continue on your usual day. If more than five days have passed, skip that dose and wait for your next scheduled one. Never take two doses in the same week to compensate, that's the key rule. For the exact wording on missed doses, the patient information leaflet that comes with your pen is the authoritative source; your prescriber or pharmacist can also clarify it.
Pausing treatment (for surgery, a holiday, or a planned break) is something to discuss with your prescriber before you do it. Stopping for several weeks can affect how you tolerate the medicine when you restart, and a prescriber may recommend going back to a lower dose. The broader question of how semaglutide fits into longer-term weight management is explored on the semaglutide overview.
It is also worth knowing that the schedule described here applies specifically to Wegovy. Ozempic contains the same active ingredient but is licensed for type 2 diabetes, not weight management, and uses a different dose range. The two are not interchangeable, and anyone asking about semaglutide for weight loss should be working with a prescription written for Wegovy. The semaglutide frequency page covers those distinctions if you want to explore them further.
Wegovy is a prescription-only medicine. That means the schedule is not something you self-manage from a leaflet alone, a prescriber is involved at every stage. At a regulated UK service, that means your consultation is reviewed by a GPhC-registered Independent Prescriber before any treatment is issued, and before every repeat order. The prescriber checks that the current dose is appropriate and that any side effects are within a manageable range before authorising the next pen.
If you are weighing up the cost of that clinical oversight, the Wegovy price guide explains what private treatment typically includes and what questions to ask of any provider. For people wondering whether Wegovy is right for them at all, a comparison of the available weight-loss treatment options is a useful place to start the conversation. NICE's appraisal of semaglutide for weight management, published as TA875, sets out the clinical evidence base in detail.
Once a prescriber has confirmed suitability, the practical question of fitting a weekly injection into everyday life tends to be simpler than people expect. It's one injection a week. Most people find a day that works and rarely think about it again after the first month.
The people
Superintendent Pharmacist (GPhC No. 2217101)
Accountable for the safe running of our registered pharmacy, from every dispensing check to every dispatch.
Clinical Lead (GPhC No. 2231744)
Sets our clinical standards and checks everything we publish against current MHRA guidance.
Independent Prescriber (GPhC No. 2084501)
Personally reviews consultations and assesses whether treatment is clinically appropriate, and leads dose adjustments and follow-up checks.
Independent Prescriber (GPhC No. 2083426)
Personally reviews consultations and assesses whether treatment is clinically appropriate, and leads dose adjustments and follow-up checks.