Yes, I am taking Chantix. It is amazing. I consider it a miracle drug. After 3 weeks I am down to 1-2 cigarettes a day from a pack a day!! My cousion is taking it and she smoked 2 packs a day-she hasn't smoked in 2 months. It's crazy how time goes by and you realize "WOW, I haven't even thought about a cigarette!!". It's about $100 dollars for a month supply, but well worth it. My cousin and I both didn't sleep real well for several nights during the first week , but that went away. You may dream more than usual that first week. Also, we both experienced some nausea, so it is important to drink a lot of water and eat when you take it. Stick with it, though-it's unbelievable.