Varenicline
"I started a 12 week course on champix I lasted 4 weeks. I can't rate them enough I only lasted 4 weeks cos that's how long it took me to stop smoking and 3 months on I don't even have the need or urge to pick up a Cigy. I've been smoking...sorry I used to smoke for 20 years tried everything to stop and nothing helped.  The only side affect I had was a few restless nights where i found it hard to sleep but that's a small price to pay to kicking the habbit. Thank you champix !!"