Bupropion
"Absolutely miracle med for smoking cessation!  I smoked for 15 yrs (anywhere from 2-4 packs/day).  Had the attitude, "if I quit, I quit; if I don't, I don't".  Within 10 days I stopped.  I did experience a few side-effects that were no big deal (insomnia, funny taste in mouth). I didn't have a "stop-date" just one day I lit a cigarette, took about three drags then put it out.  That was 14 yrs ago.  Took me about 5 yrs to say I quit - I always said, "I haven't had a cigarette in a while".  I still have my 1/2 carton as my trophy ;-)"