Zepbound click chart

Free Zepbound KwikPen click counter

Use this calculator to see how many clicks match your prescribed dose.

Click count calculator

Read this first. Lilly's instructions for use say: "Do not count clicks as you select the dose." A count is only an approximation, and the 60 clicks filled in below is not a label figure. Count your own pen and ask your prescriber before relying on this.

The full dose printed on your KwikPen.

Not on the label. Count the clicks on your own pen and change this.

Weekly is 7. Used to work out how long the pen lasts.

Enter what the pen cost to see the cost per injection.

Counts the liquid left after the fourth dose as a fifth dose when working out how many injections the pen holds.

How the Zepbound dose calculator works

  1. Pick your pen strengthEach KwikPen delivers one full dose, printed on the pen. Choose it from the list.
  2. Enter the doseType the dose your prescriber gave you, in mg. It can be a full dose or a smaller amount you agreed with them.
  3. Read the click countThe calculator shows the whole number of clicks that comes closest, what they would deliver, and how many injections like it the pen holds.

Check it against your label

Frequently asked questions

What is the Zepbound KwikPen click counter?

It estimates how many clicks of the dose knob correspond to an amount in mg. It is an approximation. It does not suggest a dose, and what you take comes from your prescriber and your label.

How many clicks are in a full dose?

The label does not say. This page starts at 60, which assumes 0.6 mL per full dose and 0.01 mL per click. The first figure is on the label; the second is not. Count your own pen and change the number.

How many clicks equal 2.5 mg?

With 60 clicks in a full dose, a 10 mg pen gives about 0.167 mg per click, so 2.5 mg is 15 clicks. A 5 mg pen gives 30 clicks and a 15 mg pen gives 10. These follow from the assumption above, not from the label.

How much medicine is in one click?

The full dose divided by the clicks in it. With 60 clicks, a 10 mg pen gives about 0.167 mg per click and a 15 mg pen gives 0.25 mg. A stronger pen has more in each click.

Can you split doses using clicks?

Some people do, but it is not a method Lilly describes or supports, and the instructions say not to count clicks. The mechanism has slack, so a small number of clicks is unreliable. Ask your prescriber or pharmacist first.

What about the medicine left after four doses?

Lilly's instructions say to throw the pen away after four doses, even if some medicine is left. The leftover cannot be measured with the dial, and the label does not describe a fifth dose. The "Golden Dose" switch in the calculator only changes the pen total in the sum, and shows this warning when it is on.

Does this work for single-dose pens?

No. Only a multi-dose KwikPen has a dose knob. A single-dose pen delivers its dose in one press, so there is nothing to count.

How is the result worked out?

Amount per click = full dose ÷ clicks in a full dose. Clicks = desired dose ÷ amount per click, rounded to the nearest whole click. Delivered = whole clicks × amount per click. Injections in the pen = full dose × 4 ÷ delivered, rounded down (× 5 if Golden Dose is switched on).

Example with made-up numbers: a full dose of 10 mg in 100 clicks is 0.1 mg per click. Wanting 2.5 mg gives 25 clicks, delivering exactly 2.5 mg. Wanting 0.25 mg gives 2.5 clicks, which rounds to 3 and delivers 0.3 mg, 20% over. The calculator warns you about a result like that. It also warns for fewer than 2 clicks, and for a dose larger than a full dose.

Data sources
  1. U.S. prescribing information on DailyMed: Zepbound. Checked 2 November 2026.
  2. EU product information from the European Medicines Agency: Mounjaro.

Our other free tools

Medical disclaimer. This calculator is for information only and is not medical advice. Talk to your prescriber before changing how you take your medicine. Reko does not suggest doses and takes no responsibility for dosing errors.
Off-label notice. Counting clicks to take part of a dose is a community practice, not a method approved by the maker. The pen is designed to deliver full doses.

Keep your Zepbound doses in Reko

Reko counts clicks, flags a dose a pen can't deliver reliably, and stores the amount you actually took, so your record shows what was delivered and not only what was planned. It never suggests a dose.

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