Most people will probably have no problems coming off champix.However some people have , i came across an 130 page discussion and find that some people had wished they had known ,so they could wean off them.
I thought i would let people know here so they are at least prepared .
They have also come off chantix recommending this
1 week-1/2mg twice a day
1 week-1/2mg once a day
1 week-1/4mg once a day
1 week-1/4 once every other day
Off of the Chantix
It does say on the instructions that doctor might recommend weaning off ,but some of our doctors know little about chantix
I found it by searching
CHANTIX - PROBLEMS AFTER QUITTING OR WEANING