Wegovy 1mg dose per click: what the numbers on your pen actually tell you

What the clinical approval documents say about click-based dosing

The Wegovy pre-filled injection pen is engineered so that each full depression of the plunger delivers 1mg of semaglutide. This isn't an approximation: the Summary of Product Characteristics published on the electronic Medicines Compendium confirms the device-controlled unit dose. The practical implication is straightforward. A 0.25mg starting dose requires a quarter of a full click's worth of travel, which is why Novo Nordisk supplies distinct pen strengths rather than expecting patients to measure partial clicks. At 2.4mg maintenance, the plunger must complete the equivalent of 2.4 full click-units of travel in a single administration; again, a dedicated pen handles this mechanically.

NICE's appraisal of semaglutide for weight management (TA875) is built around clinical-trial evidence at the 2.4mg dose, which produces around 15% average body-weight reduction over 68 weeks, figures drawn from the STEP 1 trial published in the New England Journal of Medicine. The dose-per-click architecture exists precisely to make that 2.4mg dose reproducible at scale, because small errors in injection volume at these concentrations would translate into meaningful variation in what the body receives. Knowing that your pen delivers 1mg per click is therefore less about curiosity and more about being able to confirm the device is working as intended when you hear and feel the mechanism engage.

If a click feels different (stiffer, shorter, or incomplete) that's worth raising with your prescriber or pharmacist rather than repeating the injection. The full Wegovy dose range covers each pen strength in detail.

Why the 1mg-per-click unit doesn't let you self-adjust your dose

A reasonable follow-up question is: if the pen delivers 1mg per click, can you simply click twice at the 0.25mg stage to get 0.5mg? The answer is no, for two reasons. First, the 0.25mg pen holds a concentration designed to yield that specific dose in one full stroke, the liquid volume, not the click count alone, determines what's administered. Second, and more importantly, dose changes on Wegovy are clinical decisions, not mechanical ones. The prescriber reviews your response, your tolerance and your weight trend before authorising the next step. Skipping ahead bypasses that safety layer.

This matters because the titration schedule exists to minimise the gastrointestinal side effects (nausea, vomiting, loose stools) that are most common in the early weeks of treatment and after each increase. The NHS medicines page for semaglutide explains this clearly, noting that GI effects typically ease as the body adjusts. Going too fast can make them significantly worse. The Wegovy dose-per-click chart maps each pen's click mechanism against the titration timeline, which can be useful to read alongside the Patient Information Leaflet your pharmacy supplies.

For people considering where cost fits into all this: pen strength and dose stage affect pricing, and a breakdown of what's included in a private prescription is worth reading before you commit. You can explore that on the Wegovy private prescription page. Some people time their repeat orders around a month-end payday or a bank holiday, worth factoring in if you're ordering close to a public holiday, since next-working-day delivery won't cover non-working days.

The 7.2mg pen: a different click story

On 14 April 2026 the MHRA approved a dedicated single-dose 7.2mg Wegovy pen, as confirmed on GOV.UK. This pen operates differently from the standard multi-click devices. It uses an auto-dosing mechanism with a built-in covered needle and locks automatically after use, there is no sequence of clicks to count. The full 7.2mg is delivered in a single operation. The approval covers adults with a BMI of 30 or above, and the starting dose remains 0.25mg; clinicians titrate upward at roughly four-weekly intervals under the same schedule, reaching 7.2mg only after establishing tolerance at each lower stage.

Trial data at this higher dose reported approximately 20.7% average weight reduction over 72 weeks, narrowing the gap with tirzepatide 15mg results seen in the SURMOUNT-5 head-to-head study. The 2.4mg dose-per-click guide and the 1mg-click detail page cover the standard pen series for readers who are at an earlier titration stage. For the 7.2mg pen specifically, the mechanism description in the Patient Information Leaflet on the electronic Medicines Compendium is the authoritative reference, your prescriber or pharmacist can walk you through it at your next clinical review.

What to check if your pen click doesn't feel right

A correctly functioning Wegovy pen will give audible and tactile feedback at the point of full dose delivery. If the mechanism feels inconsistent (or if the pen has been stored outside the refrigerator for longer than the Patient Information Leaflet allows) that's a clinical conversation, not something to troubleshoot alone. Contact your prescribing service or pharmacist before using a pen you're unsure about.

Counterfeit pens have been seized in the UK in significant quantities; the MHRA has warned publicly that fake devices have contained the wrong substance entirely. A pen sourced through a GPhC-registered pharmacy arrives from the licensed UK supply chain, which is your most reliable protection against a device that clicks correctly but delivers something other than semaglutide. If you have questions about your pen, our prescribers are available seven days a week, get in touch or review common queries on the FAQs page.

If you'd like to understand how Wegovy fits the broader picture of medically supervised weight management, the weight-loss treatment overview is a good starting point. When you're ready to talk to a prescriber, check your eligibility with a free consultation.