If you really want to quit, I used Chantix and it took away the wanting a smoke really well, finally was able to stop completely. Still can't breath for shit 4 years later :(
*side effects may include suicidal thoughts or actions, death, nausea, vomiting, swelling of the face and hands, black tarry stool, hallucinations, worsening mood, anxiety, and hostility
Talk to your doctor if you think Chantix is right for you!