Zyban is a sustained-release medication that is nicotine-free and is used to help smokers stop smoking. It has already helped many smokers, even those who have smoked 20 years or more, to stop smoking. Bupropion is an antidepressant medication. The exact way that bupropion works is unknown. Bupropion is used to relieve symptoms of depression such as feelings of sadness, worthlessness or guilt, loss of interest in daily activities, changes in appetite, tiredness, sleeping too much, insomnia, and thoughts of death or suicide. Bupropion is also used to help people stop smoking by reducing withdrawal effects.
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