Mounjaro®
Starting from £179.99/mo
Start journey Learn moreThe Mounjaro 10mg KwikPen delivers its dose through a fixed number of clicks as you press the injection button. Each click represents a set volume of solution, so the click chart for 10mg tells you exactly what a complete, correctly administered dose sounds and feels like. If you are on 10mg and unsure whether you reached the end of your dose, this page covers what the licensed prescribing information and SmPC say about confirming your injection is complete. Mounjaro is a prescription-only medicine; your prescriber and the Patient Information Leaflet supplied with your pen are the definitive guide for your individual circumstances.
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Mounjaro's KwikPen is a multi-dose, pre-filled autoinjector. Each pen contains four weekly doses at the stated concentration, and the mechanism advances one dose per injection cycle. The click you hear when the injection button reaches its travel limit is a mechanical cue built into the pen's design. The Mounjaro SmPC on the electronic Medicines Compendium (eMC) sets out how to confirm a complete injection: you press the button firmly until it stops, hold for ten seconds, and then check that the dose window indicator has moved to confirm delivery. Clicks audible during that hold are normal, they indicate the pen is still advancing fluid.
The 10mg pen delivers 0.5 ml of solution per dose, the same injection volume as every other KwikPen strength. The difference between the 2.5mg and 10mg pens is concentration, not volume. That means the click pattern you experienced on earlier pens in the titration schedule should feel broadly similar on 10mg, which is worth knowing if nerves about a new, higher dose are making you second-guess what you are hearing.
For a broader overview of how click counts vary across all Mounjaro doses, the Mounjaro dose chart by clicks maps each pen strength in one place.
The licensed titration pathway for Mounjaro begins at 2.5mg for the first four weeks, a dose that exists specifically to let your body adjust to the medicine rather than to drive weight loss. Doses step up every four weeks under prescriber guidance: 2.5mg, 5mg, 7.5mg, 10mg, 12.5mg, and 15mg, and if you want to revisit how the pen behaves at the preceding steps, the 5mg click chart walks through what to expect at that earlier stage. Reaching 10mg means you are past the halfway point in the schedule, and for many people the dose at which appetite suppression becomes meaningfully noticeable.
The NICE technology appraisal TA1026, which recommended tirzepatide for weight management in December 2024, notes that treatment should continue only if clinically meaningful weight loss is occurring. At 10mg, your prescriber will typically be assessing whether progression to 12.5mg is appropriate or whether staying at this maintenance point is the right clinical decision for you. That review happens before any dose change, it is not automatic.
If you are curious how the click experience compares at the next step up, the 15mg click chart page covers the highest-dose pen in the same practical terms.
The most common reasons people consult a click chart mid-injection are a soft or partial button press, injecting into a skin site with tension on it, or simply not holding the pen steady for the full ten seconds. These are fixable in real time. Press the button as far as it physically travels, keep the pen at a right angle to the skin, and wait for the full count before withdrawing.
If the dose window indicator did not move, or if the pen felt blocked, do not inject a replacement dose without speaking to your pharmacist or prescriber first. The NHS guidance on tirzepatide advises contacting your healthcare team if you are unsure whether a dose was delivered, since doubling inadvertently carries its own risk. You can find practical detail about injection sites and rotation in the full Mounjaro overview page.
Bent or damaged needles are another signal to stop rather than retry. Always attach a fresh needle for each injection, and dispose of used needles immediately in a puncture-resistant container. The NHS tirzepatide medicine page outlines what to do if you miss or suspect a missed dose, and the advice there is clear: if in doubt, speak to your pharmacist rather than guessing.
It is understandable to feel uncertain at 10mg. You have been on Mounjaro long enough to know it works, but a higher concentration pen and a titration schedule that still has steps ahead of it can raise entirely reasonable questions about whether you are using it correctly, and people coming from the 7.5mg pen sometimes find it helpful to compare notes against the 7.5mg click chart to see how the two pens differ in practice. Our prescribers hear versions of this every week.
Technique questions, the click chart, and pen mechanics are answered by the Patient Information Leaflet and pages like this one. But questions about whether 10mg is the right dose for you, whether you are ready to step up, or how to read your progress so far, those belong in a clinical review. If your treatment is managed through a nume consultation, our prescribers review every repeat order before it is approved, so that conversation is built into the process rather than an extra step you have to chase.
The cost of that ongoing clinical oversight is included in the price of treatment, no separate consultation fees, no subscription. If you want to understand how that pricing works across the Mounjaro dose range, the weight loss treatments overview sets it out plainly. And if you are weighing whether 10mg or a different strength suits your situation, the Mounjaro dose chart provides a structured reference across the full schedule.
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.