UK counterfeit-medicine hub
Fake medicines — UK reference
Counterfeit GLP-1 pens are a UK safety priority — the MHRA has issued repeated alerts on falsified Mounjaro, Ozempic, and other pens. Some seized counterfeits have contained insulin rather than semaglutide. This hub covers brand-specific identifiers, what to do if you suspect a fake, and how to report.
Brand-specific counterfeit identifiers
Fake Mounjaro pens
Feb 2026 MHRA alert on falsified 15 mg KwikPens.
Fake Wegovy pens
FixDose pen format, counterfeit patterns, what to check.
Fake Ozempic pens
Counterfeit Ozempic patterns; some seized pens contained insulin.
Fake Saxenda pens
Daily multi-dose pen format, lower counterfeit volume.
Fake retatrutide pens
No licensed reference — every vial unverified by definition.
What to do
What to do if your pen looks wrong
Immediate action ladder — stop, photograph, preserve, report.
Bought from social media — what to do
Chargeback, Action Fraud, MHRA, platform reporting.
Yellow Card reporting guide
How to report a suspected counterfeit or adverse reaction.
Fake Pen Triage (tool)
Interactive triage tool for suspect pens.
How fakes get to UK consumers
Illegal seller tactics
Reshipping, repackaging, fake CoAs, fake pharmacy storefronts.
Social media seller warnings
Instagram / TikTok / Telegram supply chain warnings.
Marketplace scam patterns
Facebook / eBay / Gumtree GLP-1 scam playbook.
Counterfeit medicine timeline
Chronological MHRA enforcement record.