Varenicline
"Tried champix about two years ago and although I didn't want to smoke the side effects where to bad and the doctor told me to stop them, however I've since been back to Gp and I'm back on them but I only take 0.5mg twice a day instead of the 1mg twice a day and I've been smoke free so far for almost 3 weeks. They do work but yu have to find your balance like with most medication. If you have tried everything then why not try these I use to smoke 20 a day for almost 30 years."