while taking or after stopping chantix. you notice agitation, hostility, depression or changes in behavior, thinking or mood that are not typical for you, or if you develop suicidal thoughts or actions, stop taking chantix and call your doct right away. talk to your doctor about any history of depression or other mental health problems, which can get worse while ting chantix. some people can have allergic or serious skin reactions to chantix, some of which can be fe threatening. if you notice swelling of face, mouth, throat or a rash stop taking chantix and see your doct rightway. do not take chantix if you've had a serious allergic or skin reaction to chantix. tell your doctor which medicines you're taking as they may work differently when you quit smoking. chantix dosing may be different ifyou have kidney problems. the most common side effect is nausea. patients also reported trouble sleeng dreams. until you know how chantix may affect you, use caution when driving or operating machinery. chantix should not be taken with other quit-smoking products. ♪ my benjami he helped me with the countdown. "ben, how many days has it been?" "5 days, mom. 10 days, mom."