which isn't rocket science. it's just common sense. from td ameritrade. before chantix, i tried to quit probably about five times. it was different than the other times i tried to quit. [ male announcer ] along with support, chantix varenicline is proven to help people quit smoking. it's a non-nicotine pill. chantix reduced my urge to smoke. that helped me quit smoking. [ male announcer ] some people had changes in behavior, thinking, or mood, hostility, agitation, depressed mood, and suicidal thoughts or actions