I DON'T need it for smoking cessastion. Wellbutrin is an antidepressant. After it was out for a while, they found that it helped for smoking too. So, they did a trial and came out with Zyban. Zyban is the same exact med, it's just marketed to smokers. They are doing anothe trial now because it helps with obesity. I need it as an antidepressant.