Bupropion is an antidepressant medication used to treat major depressive disorder and seasonal affective disorder. The Zyban brand of bupropion is used to help people stop smoking by reducing cravings and other withdrawal effects. Bupropion may also be used for purposes not listed in this medication guide.
Zyban is used to help people quit smoking. Zyban acts as a block towards cravings that may lead to relapses for those that are in the verge of quitting. Zyban also helps treat depression.