I tried the Chantix for a month and the dreams got so bad I had to go off of it. I am talking really bad dreams. A normal nightmare times 100. My wife would wake up to me every night screaming. It got so bad i didnt want to fall asleep for the fear of the dreams. THe effects of the medicine worked great on breaking the habbit but with the dreams I just couldnt stay on it and took myself off of it. I am on Welbutrion right now and have been for a few days. I have noticed i can smell more of the cigarette on me and the cigarettes taste like trash. I am really hoping this one works. If you can get past the dreams chantix is great.