I quit Chantix, too. It altered my awareness to the extent I used no judgement at all and walked up behind one of my horses who was asserting her dominance over another horse. I know better than to do this....but wasn’t even thinking. I got kicked in the face from one of her rear legs as she was being emphatic in her message to the other horse. My injury was only superficial, fortunately.
This particular horse is a loving, gentle horse and has never, in 20 years, ever kicked a human. I never took another Chantix...this was maybe 10 days, 2 wks into the medication.
I know what you mean. A neighbor of mine was taking Chantix a few years ago and she wound up voting for Obama!