Vapers complain their devices are leaving them exhausted, blurring their vision or giving them constipation

VAPERS complain their devices are leaving them exhausted, blurring their vision or giving them constipation, the medicines watchdog says.

It has received some 200 reports from people suffering 556 different side-effects over the past three years.

One user complained of hearing problems, while another claimed the gadgets left a ringing sound in their ears.

The Medicines and Healthcare products Regulatory Agency said the most frequent complaints involved coughing, hiccups, a sore throat or a croaky voice, and wheezing.

More peculiar issues included two reports of vertigo — where the room spins — and three of blurred vision or teary eyes.

One said they were left tired by their device. Another said vaping made them feel lazy.

Around three million people in England use e-cigarettes.

John Dunne, boss of the UK Vaping Industry Association, said the devices are much less harmful than smoking.

He added: “It’s commonly known adult smokers transitioning from smoking will potentially experience side effects as their bodies adjust.”

The watchdog said: “Reporting a reaction does not necessarily mean it has been caused by the e-cigarette.”