Champix (varenicline) is based on a plant extract, although does not contain nicotine and is not addictive.
Champix works by;
- Reducing cravings and withdrawal symptoms that happen when you stop smoking
- Blocking the effects of nicotine, through reducing the satisfaction of a cigarette and reducing the desire to have another cigarette.
Evidence suggests that champix is the most effective medication for helping people to stop smoking.