Uploaded March 2026 | Updated September 2026, 2 days ago

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Eli Lilly has announced that a modified Mounjaro KwikPen will begin rolling out in the UK from April 2026.

The medication inside the pen (tirzepatide) isn’t changing — but the internal design of the pen is being updated to reduce leftover medicine at the end of the device.

In this video I break down:

• What Eli Lilly actually announced

• Why the current pens often have leftover medication

• How this could affect people using the pen weekly

• Whether it will change how long a pen lasts

As someone documenting my Mounjaro weight-loss journey, this update could be important for anyone using the KwikPen in the UK.