Hi Mikek, I am using Chantix and it seems to be working fairly well for me. It does upset your stomach if you don't eat something, and I mean a meal, not a snack, with the pill. The really great thing about Chantix is that you are off the nicotine entirely, no replacement. I like that whole idea of going nicotine free. I hope you do some research on different ways to quit because there are patches, gum, the inhaled thingy, and medications, so the choices are numerous. Find one you like and stick to it. Fight for your life and it will be worth it. DeniseK