After numerous attempts to quit and after trying everything over the counter including patches, lozenges, and gum, I quit for good with the help of Chantix (by prescription). My last smoke was Nov.5th 2008. It was actually rather easy with the Chantix. I know many others who successfully quit using it. I took it for 2 full weeks before I quit smoking and never looked back. I did not gain a pound............. NOT A SINGLE POUND!! That was something I was really worried about. For the first day or so, I did alot of snacking but after that, I was fine. I was a 2 pack a day smoker for 17 years.