Varenicline
"I took Chantix according to the directions for 1 month and I have been smoke free for over a year.  Not only did Chantix help me quit, but I have not had any desire to smoke again.   Chantix is amazing.  I tried quitting with the patch, gum, nicotine inhaler, hypnosis, will power, and Zyban (Wellbutrin) and NOTHING ever worked for more then a month or two.  I would recommend Chantix to EVERYONE and ANYONE who is serious about quitting.  IT WORKS!"