Chantix
"Smoked all during my 20s, quit for 7 years, then smoked for 20 years but had tapered down to 1/2 pack a day or less. Had bronchitis twice last year so got Chantix and started taking it around Nov. 1, planned my quit date for after Thanksgiving, and then just didn't think about it. Started forgetting to go out for a smoke during work, was down to maybe 3 a day by my quit date, ended up still having ONE a day in the morning for a few weeks, had 2-3 during my long Christmas weekend, and have had zero since. Side effects have been slight nausea even with food (but not every day), awesome dreams, somewhat lighter sleep, and mild metallic taste in my mouth. Mild occasional cravings now, on week 10, nothing I can't ignore. Plan on tapering off soon."