My mother was on it (and successfully quit smoking using it) and she had some outrageous paranoia. She would accuse us of conspiring against her, making her sick, not loving her, lying to her, stealing things (that she misplaced), turning the dog against her, trying to poison her and sabotaging her car…she smoked for 40 years and failed at quitting hundreds of times. Chantix did the trick somehow but made her nuts. MORE