Drug Safety Update

Falsified Mounjaro KwikPen 15mg pre-filled pens

Issued 24 Feb 2026

Read and act on the official notice on GOV.UK

The MHRA's summary

A falsified version of Mounjaro (tirzepatide) KwikPen 15mg solution for injection has been found supplied through one online pharmacy in the UK. The falsified product is labelled with batch D873576 and applies to Mounjaro KwikPen 15mg solution for injection in pre-filled pen only.

MHRA's audience tags: Dispensing GP practices, Emergency medicine, Endocrinology diabetology metabolism, General practice, Nutrition dietetics, Pharmacy

Pharmshark is not an official alerting route. Make sure your pharmacy receives alerts directly from the MHRA and through your organisation, and always act on the official GOV.UK notice.

Source: the MHRA on GOV.UK. Contains public sector information licensed under the Open Government Licence v3.0. Pharmshark is not affiliated with or endorsed by the MHRA.