How many clicks are in the 1mg Wegovy pen — and what each one means

Picture this: you're holding the pen and wondering whether you've already used it

You pull the Wegovy pen out of the fridge on a Sunday evening, notice the dose indicator but can't quite remember if last week's click happened. It's a situation plenty of people find themselves in, especially around the school-holiday weeks when routines slide. The short answer is that each 1mg Wegovy pen is pre-filled to deliver exactly four weekly injections. The pen's built-in dose counter moves forward one position each time you inject, so if the counter shows 3, you have used one dose and have three left.

Each of those four injections delivers 0.25mg of semaglutide. The pen is labelled 1mg because that is the total volume of active medicine across all four clicks, not because any single injection contains 1mg. This distinction trips people up more than almost any other question about the device. The Novo Nordisk patient leaflet (available in full on the Electronic Medicines Compendium) sets out the mechanism in detail, but the everyday version is simple: four injections, one per week, one pen.

If you genuinely cannot tell whether you injected last week, do not inject twice to compensate. Contact your prescriber or the pharmacy that dispensed your pen. Taking a double dose does not increase efficacy (the medicine has a half-life of roughly one week) but it does increase the chance of nausea, vomiting and other gastrointestinal effects. For a broader picture of how the full Wegovy dosing schedule works, that page covers each phase from the starter pen through to maintenance.

Why the 1mg pen sits where it does in the titration schedule

The 1mg pen is not a maintenance dose. It is one step on a gradual staircase designed to let your body adjust to semaglutide before the dose climbs higher. The standard Wegovy titration runs: 0.25mg for four weeks, 0.5mg for four weeks, 1mg for four weeks, 1.7mg for four weeks, then 2.4mg as the standard maintenance target. The 7.2mg dose (approved by the MHRA in January 2026 and later available as a dedicated single-dose pen from April 2026) sits above that for eligible patients, but the starting sequence remains the same.

The 1mg phase is typically weeks nine to twelve of treatment. By this point most people have moved through the early nausea peak, and the dose is meaningful enough to start producing more noticeable appetite changes, though the largest effects come later. A full breakdown of Wegovy dose sizes explains what each strength is designed to achieve within the schedule. Your prescriber sets the pace; moving faster through the steps is not clinically recommended and is not something to attempt based on how you feel on any given week.

One thing worth knowing: if you're curious about how many clicks are in the 0.5mg Wegovy pen, that page covers the earlier step in the titration in the same detail as this one. The 2.4mg maintenance pen has the same four-click structure. The 2.4mg pen's click count is covered separately if you're further along in treatment and checking ahead. The physical mechanism is consistent across the range; what changes is the amount of semaglutide delivered per click.

Storage, click mechanics and what not to do

The 1mg Wegovy pen should be kept refrigerated between 2°C and 8°C until you need it. Once in use, the pen can be kept at room temperature, but check the patient information leaflet for the exact duration, because the permitted window is specific and matters for the medicine's stability. Do not freeze the pen. If it has been frozen, do not use it; contact your pharmacy.

On injection day, the mechanics are straightforward: select your injection site (abdomen, thigh or upper arm are all suitable; rotate between sites week to week), hold the pen against the skin, and press the injection button until you hear or feel the click and the dose counter advances. The NHS guidance on semaglutide for patients includes practical injection advice alongside safety information. Do not press the button multiple times in one session to try to advance the counter, the pen is single-dose per session by design.

If your pen is damaged, leaking, or the dose counter does not advance after a confirmed injection, do not attempt to use a second pen to compensate. Reach out to your prescriber or pharmacist first. For questions about how many doses a single pen contains across all formats, this page on doses per Wegovy pen covers the detail. And if cost is on your mind as you work through the titration pens, this cost context page explains what the UK market typically looks like for private prescriptions. Wegovy is a prescription-only medicine; a clinical assessment comes before every supply, and no legitimate pharmacy skips that step.

If you have questions about your specific pen, dose or timing, start a free consultation with our prescribers, a real clinician reviews your case the same day.