Isn't it terrible when you play a mean trick on a co-host. Allison really had no idea we where going to do a show on Nicotine.

Allison talked about the fact she's stopped smoking using Champix which is available on the NHS in the UK.

There are over 4000 chemicals in a cigarette but here is a discussion on some of the more interesting ones.

Wikipedia has (as always) a good neutral page on nicotine.

The two books mentioned in the show where Alan Carr's 'How to stop smoking' and 'What is nicotine'.