if you notice any of these symptoms or behaviors, stopaking chantix and call your doctor right away. tell your doctor about anyistory of depression or other mental health problems, which could get worse while taking chantix. don't take chantix if you've had a serious allergic or skin reaction to it. if you develop serus allergic or skin reactions, stop taking chantix and see your doctor right away as some of these can be life-threatening. dosing may be different if you have kidney problems. until you know how chantix affects you, use caution when driving or operating machinery. common side effects include nausea, trouble sleeping and unusual dreams. ♪ ♪ i'm not just someone who's quitting with chantix and support, -i'm your coworker. -teammate. -friend. -friend. [ male announcer ] over 7 million people nationwide have talked to their doctor about chantix. chances are, you could be one of them. and now through march 31st visit chantix.com for a limited time money saving offer and for terms and conditions. i really didn't see it coming.