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Medicines and Healthcare products Regulatory Agency gov.uk

Counterfeit weight loss pens worth £2 million seized by MHRA and West Midlands Police

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On October 14, over 12,000 fake retatrutide and tirzepatide pens were seized along with packaging for around 30,000 more products. The raid took place at an industrial unit in Birmingham.

Tim Duffield, Head Intelligence at the MHRA’s Criminal Enforcement Unit said,

We are tackling the organised criminal gangs whose illegal trade in unauthorised medicines puts people at risk of serious harm.

Our officers seized around £2 million worth of fake weight loss medicines from a filthy warehouse on an industrial estate. These products have not been assessed for safety, quality or effectiveness, and there is no guarantee of what they contain or whether they have been contaminated with harmful substances.

Retatrutide has not been authorised for use in the UK. Products being sold as retatrutide outside legitimate clinical trials are being supplied illegally and could pose serious risks to public health.

We urge people to avoid buying weight-loss medicines from unregulated sources. Anyone considering GLP-1 treatment should speak to a healthcare professional and only obtain medicines from a registered pharmacy against a valid prescription.

October’s raid is the latest in a series of MHRA operations that has removed tens of thousands of doses of unauthorised GLP-1 weight loss medicines from circulation:

  • In May 2026, two people were arrested following a raid on a country estate believed to have been used to manufacture, assemble and distribute unlicensed weight-loss medicines. Around 12,000 doses were recovered, together with packaging materials and suspected pharmaceutical substances
  • In February 2026, around 2,000 doses of unauthorised weight-loss medicines awaiting dispatch were seized, alongside manufacturing equipment, suspected pharmaceutical ingredients, packaging and commercial vehicles.

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    October 15, 2026 14:01
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