The Chief Medical Officer said it was "only right" that electronic cigarettes would be regulated as medicines in the future and that they were a "safer" source of nicotine than normal cigarettes.
Professor Dame Sally Davies said:
Smokers are harmed by the deadly tar and toxins in tobacco smoke, not the nicotine.
While it’s best to quit completely, I realise that not every smoker can and it is much better to get nicotine from safer sources such as nicotine replacement therapy.
More and more people are using e-cigarettes, so it’s only right these products are properly regulated to be safe and work effectively.
E-cigarettes are set to be classified as "medicines" in a bid to tighten up regulation. But what are e-cigarettes and are they safe to use?
The MHRA says e-cigarette nicotine levels can vary from from batch to batch, casting doubt on how useful they are to those aiming to quit.