i'm ryan awith chantix.king smoking was comforting. it was like a security blanket. it made me feel good, it really did. i would doubt myself that i could actually quit, but with chantix i did it. along with support, chantix (varenicline) is proven to help people quit smoking. chantix reduced my urge to smoke. when you try to quit smoking, with or without chantix, you may have nicotine withdrawal symptoms. some people had changes in behavior or thinking, aggression, hostility, agitation, depressed mood, or suicidal thoughts or actions with chantix. serious side effects may include seizures, new or worse heart or blood vessel problems, sleepwalking or allergic and skin reactions which can be life-threatening. stop chantix and get help right away if you have any of these. tell your healthcare provider if you've had depression or other mental health problems. decrease alcohol use while taking chantix. use caution when driving or operating machinery. the most common side effect is nausea. i'm so proud to be a non-smoker.