I was really feeling the side effects of champix. I went and saw my local chemist and he was very good. On his advice  i lowered the dose to half a tablet night and morning for a day and then to half in the morning and full tablet late afternoon.I have not felt anywhere near as sick,my head seems to be in the right place and the hot hot hot flushes have eased. All the side effects are now more than manageable. He suggested that the side effects are worse for people with a slow metabilism which i know i have.