if you have any of these, stop chantix and call your doctor right away. tell your doctor about any history of mental health problems, which could get worse or of seizures. don't take chantix if you've had a serious allergic or skin reaction to it. if you have these, stop chantix and call your doctor right away as some can be life-threatening. tell your doctor if you have heart or blood vessel problems, or develop new or worse symptoms. get medical help right away if you have symptoms of a heart attack or stroke. decrease alcohol use while taking chantix. use caution driving or operating machinery. most common side effect is nausea. thank you chantix. ask your doctor if chantix is right for you. we're out ink,nk! not ink. printing doesn't have to be painful. now, during "hp savings month" at staples, get up to $180 off hp printers.