Varenicline
"I have been smoking for 15 years, and over the past 5 years, have smoked 30 cigarettes a day. I am on my 3rd day of Champix, and am around 20 cigarettes a day now. I have a strong addictive personality, but want to quit. I have side effects of bad dreams, waking up in sweat, Moody behavior, and  confusion. Minus the side effects, this has the best success rate for myself personally than any other quit smoking aid, I've tried and I've tried almost all. I was told to keep smoking on Champix up to 30 days. I figure if I can reduce as much as possible up to that point, I can be successful to quit."