Bupropion is a prescription medication primarily used to treat depression and to help people quit smoking. It works by affecting the balance of certain chemicals in the brain, particularly dopamine and norepinephrine. This can help improve mood and reduce cravings for nicotine. In addition to its use for depression and smoking cessation, bupropion may also be prescribed for other conditions, such as anxiety disorders and ADHD. It is available in various forms, including tablets and extended-release formulations, and is generally considered safe when used as directed by a healthcare professional.