Tirzepatide click chart: reading your Mounjaro KwikPen doses

Step 1, Check the pen before you touch the dial

Before you click anything, give the pen a visual check. Hold it up to the light: the liquid inside should be clear to slightly yellow and free of particles. If it looks cloudy or contains visible debris, do not use it; contact your pharmacy. Your pen arrives from our GPhC-registered pharmacy via DPD in plain, unbranded packaging, inside, the pen itself is sealed and ready, but it still needs to come up to room temperature for a minute or two if it has come straight from the fridge.

Attach a fresh needle, pulling the outer cap off after the inner foil seal. Confirm the dose counter window shows the number of doses remaining. If you are starting a new pen, it will show four. A quick wipe of your chosen injection site with an alcohol swab is good practice at this point, though the SmPC on the eMC is your precise reference for the full pre-injection checklist.

One practical habit worth mentioning: our prescribers hear regularly from patients who forgot which dose they were on when they opened a new pen. Writing the start date on the box takes three seconds and saves the confusion later.

Step 2, Set the dose using the click dial

Turn the dose selector until the window shows the number your prescriber has told you to use. Each click is one unit of movement and produces a tactile, audible click, that feedback is the pen confirming the selector has moved. Clicking forward increases the number; if you overshoot, click back. The mechanism is deliberately firm so accidental advances do not happen easily.

The click chart, sometimes called the Mounjaro KwikPen click chart, is simply a printed or digital reference that shows how many clicks correspond to each licensed dose: 2.5 mg, 5 mg, 7.5 mg, 10 mg, 12.5 mg and 15 mg. Because the KwikPen design means the window displays the dose number rather than a raw click count, our Mounjaro click chart helps users cross-reference what they see in the window against what their prescription says, a useful double-check, especially in the first few weeks when the routine is still being established.

Do not attempt to inject if the number in the window does not match your prescribed dose. The pen will not deliver the correct volume unless the selector is in the right position.

Step 3, Inject and confirm delivery

Once the dose is set, press the pen firmly against your skin at a 90-degree angle and hold the injection button down until the counter clicks back to show the dose has been delivered. Keep holding for a slow count to ten before removing the pen, this allows the full volume to enter the tissue. The Mounjaro injection technique guide covers site rotation (abdomen, thigh, upper arm) and depth in more detail.

After injection, check the dose counter has decreased by one. That confirmation click is the pen's way of telling you the delivery is complete. Cap the needle carefully (never re-sheath with two hands) and dispose of it in a dedicated sharps container. Used needles must never go in household bins. The NHS guidance on weight-management injections covers sharps disposal requirements clearly.

Step 4, Store the pen and track remaining doses

Return the pen to the fridge between uses. The exact room-temperature window for Mounjaro is specified in the Patient Information Leaflet and on the eMC SmPC, always check that document rather than relying on any general figure, since conditions vary. The dose counter in the window showing the remaining count is your reference for how many weekly doses are left in the pen; when it reaches zero, the pen is empty and the button locks.

If you are unsure whether a dose was fully delivered (perhaps the pen slipped or you are not certain you held it long enough) do not inject again. Contact your prescriber or aftercare team. A full FAQ on common injection concerns is available on the site, and our prescribers are reachable seven days a week.

For a printable version of the click reference, the Mounjaro clicks chart PDF is a practical resource to keep alongside your pen. If you are thinking about what treatment might suit you, our weight-loss treatment overview sets out the options clearly, and the Mounjaro price comparison page gives honest context on what private treatment typically costs across providers.

Mounjaro is licensed for weight management in adults with a BMI of 30 or above, or 27 or above alongside a relevant health condition, clinical suitability is assessed by a prescriber, not determined by BMI alone. The NHS tirzepatide patient information page and the NICE appraisal of tirzepatide (TA1026) are the authoritative UK references for who the medicine is recommended for and how it should be used.