Chantix
"I have only taken one pill so far. The first night I experienced insomnia, dry mouth, and all day I couldn't eat. I guess it's acting as an appetite suppressant for me. I also have been extremely irritable. I am 22 years old and have been smoking for 5 years. I am a 1 1/2 pack smoker a day, and JUST after 1 pill, my smoking cravings are cut in half. Will continue to take."