Polly Hudson used to be a world-class smoker, and quitting cigarettes was the hardest thing she has done, so she is celebrating news of the magic pill from University College London that is a one-stop

The new drug will help thousands of smokers to quit and could save the NHS millions, but what can patients expect from it?

Around £2.5bn is spent annually by the NHS on treating health issues caused by smoking - the leading cause of preventable illness and deaths.

The National Institute for Health and Care Excellence, which provides drug guidance for the NHS, said there are some side effects that can be seen commonly and include an abnormal appetite, constipation and/or diarrhoea, dizziness, dry mouth, headaches and nausea. Muscle aches and an increase in weight can also be seen.

The NHS outlines its strategy for helping smokers quit using Varenicline, which NHS data shows gives people the best chance of kicking the habit once and for all

A once-a-day pill that could help tens of thousands of people give up cigarettes and prevent thousands of smoking-related deaths each year will be rolled out on the health service, health officials in the UK say.