of mental health problems, which could get worse or of seizures. don't take chantix you've had a serious alrgic or skin reaction to it. if you have these, you've had a serious alrgic stop chantix and call youry as some can be lifehreatening. tell youct if you have heart or blood vessel prlems, or develop new or wor symptoms. get medical help rht away if yove symptoms of a heart attack or stroke. decrease alcohol use while taking chantix. use caution when drivingory most common side effect is nausea. it's me in control now. k your doctor if chantix is right for you.