Varenicline
"Have been smoking for 38 years my cigarette intake had crept up to 15-20. I've never really thought about stopping but had a medical scare and thought right that's it ! Started Champix 7 days ago, I am truly amazed they are magic, I actually stopped smoking on day 5 not even wanting one no cravings. It's as if I have never smoked at all I just can't explain it. I would say the only side effect I've had is constipation. If you have any doubt about this medication don't they actually work. Amazing."