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Mounjaro ® ▼ (tirzepatide)
This information is intended for UK registered healthcare professionals only in response to your search for information. For current information for all Lilly products, including Summaries of Product Characteristics, Patient Information Leaflets and Instructions for Use, please visit: www.medicines.org.uk
How many doses of Mounjaro® (tirzepatide) are there in the KwikPen?
Each KwikPen contains 4 doses, one dose taken weekly.
Please note: A modified version of the Mounjaro KwikPen will be available on the market at the same time as the initial version. While the two versions may look slightly different, they work in the same way.1 The information provided in this document applies to both the modified and initial KwikPens.
How much medicine is in the KwikPen?
The Mounjaro KwikPen is designed to deliver a fixed volume of 0.6mL of Mounjaro solution at each dose. The KwikPen contains sufficient solution to allow for the necessary priming before each injection and the delivery of a total of 4 doses (one dose given weekly for a 28-day supply of medicine).1,2
The modified KwikPen has a reduced amount of leftover medicine after the delivery of 4 complete doses compared with the initial KwikPen device. Mounjaro (tirzepatide) KwikPen plunger position following completion of 4 fixed dosesMounjaro (tirzepatide) KwikPen plunger position following completion of 4 fixed doses shows the approximate amount of leftover medicine in the initial and modified KwikPen.1
Plunger position after delivery of the 4th dose
Figure 1: Following the completion of the 4 fixed doses, the plunger positions are approximately as shown in the illustration above.
References
1Data on file, Eli Lilly and Company and/or one of its subsidiaries.
2Mounjaro [instructions for use]. Eli Lilly Nederland B.V., The Netherlands. (UK)
▼ This medicinal product is subject to additional monitoring. This will allow quick identification of new safety information. Healthcare professionals are asked to report any suspected adverse reactions.
Date of Last Review: 15 August 2025