The Mounjaro clicks chart for weight loss, explained clearly

What does each click number on the Mounjaro pen actually represent?

The KwikPen is pre-filled with enough tirzepatide for four weekly injections. The click counter on the pen window (sometimes printed as 1, 2, 3, 4) is simply a tracking mechanism. It confirms which of the four doses within that specific pen you are taking. It does not tell you your dose in milligrams; that information is on the pen label itself, alongside the strength (2.5 mg, 5 mg, and so on).

A full Mounjaro clicks chart lays this out visually, cross-referencing click number with pen strength so there is no ambiguity about what is loaded. Some people find it useful to keep the chart alongside the pen in the fridge door, particularly in the first few weeks when the routine is still new.

The practical upshot: if you are on, say, the 5 mg pen and the window shows click 3, you are on your third injection of a 5 mg dose, not moving to a higher strength. Strength only changes when your prescriber issues a different pen. The downloadable PDF version of the chart is handy if you want a printed copy.

Does the click chart tell me when to increase my dose?

No, and this is the question our prescribers hear most weeks. The clicks chart tells you where you are in a pen; it cannot tell you whether you are ready to move to the next strength. That decision belongs to your prescriber, who will look at how you have tolerated the current dose, any side effects you have reported, and your progress so far.

Under the licensed titration schedule, treatment starts at 2.5 mg for the first four weeks (a dose whose job is to settle your digestive system rather than drive weight loss) before the prescriber considers moving upward in approximately four-week steps. NICE's appraisal of tirzepatide (TA1026) notes that if less than 5% body weight has been lost after six months at the highest tolerated dose, continuing treatment should be reviewed. Titration speed is guided by tolerability, not by impatience.

If you are unsure about your schedule, the right move is to review it with a clinician rather than to use a chart as a reason to advance early. For a broader picture of how the pen is used week by week, the guide to using Mounjaro for weight loss covers the injection technique and routine in full.

What should I check before each injection, aside from the click number?

A few quick checks make every injection safer and more consistent. First, confirm the pen strength on the label matches what your prescriber issued, particularly important if someone else in the household also uses injections and pens live in the same fridge shelf.

Second, check the liquid in the pen window is clear and colourless; cloudy or discoloured solution should not be used. Third, the pen should have been stored in the fridge at 2–8°C; there is a limited window during which it can be kept at room temperature if needed, but the exact duration is stated in the Patient Information Leaflet, not in a general chart. The storage guide for Mounjaro explains refrigeration in more detail.

For injection sites, rotate between the abdomen, thigh and upper arm to avoid skin reactions building up at any one spot. Change the needle with each injection, a blunt needle increases discomfort and the risk of a lumpy injection site. A pack of compatible pen needles is available if you need to restock. Dispose of used needles in a sharps container rather than household waste.

Where does the clicks chart fit into the wider treatment picture?

The chart is a small piece of a larger process. Tirzepatide for weight loss is a prescription-only medicine, meaning a registered prescriber must assess whether it is appropriate for you (considering your BMI, any weight-related health conditions, current medicines and medical history) before any pen is dispensed. The clicks chart only becomes relevant once that clinical work is done.

For context on how private treatment compares with NHS provision, the Mounjaro treatment overview covers eligibility, NHS access phases and what private routes involve. If you are thinking about costs, the background on Eli Lilly's September 2025 UK price increase explains why private prices shifted and what a legitimate private price includes. Worth knowing before you compare figures online.

At nume, every repeat order is reviewed by a prescriber before dispatch, the clicks chart tells you where you are in a pen, but a real clinician tells you whether to move to the next one. If you have questions about your current dose or schedule, our support team is available seven days a week, and our FAQs cover the most common injection queries. When you are ready to discuss eligibility, check your eligibility with our prescribers.