Skinny jabs have been hailed as a 'game changer' for tackling obesity - but with demand soaring, an underworld of unlicensed and dangerous products is rapidly spreading.
ITV News has uncovered fake jabs, smuggled into the UK from a lab in China, and sold through social media to desperate customers.
Fake skinny jabs are also making their way onto high streets, with customers getting backroom injections in beauty salons - potentially leading to deadly consequences.
So how can you spot the fakes?
And with government and regulators promising a crackdown, can black market suppliers be stopped?
Health Correspondent Rebecca Barry tells Daniel Hewitt what you need to know.
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