What category of medication is Bupropion primarily classified as?

Bupropion is primarily classified as a dopamine and norepinephrine reuptake inhibitor (DNRI). This classification reflects its mechanism of action, which involves inhibiting the reuptake of the neurotransmitters dopamine and norepinephrine in the brain. By doing this, Bupropion increases the availability of these neurotransmitters, which can help improve mood and alleviate symptoms of depression and anxiety.

The drug is commonly used in the treatment of major depressive disorder and seasonal affective disorder, as well as for smoking cessation. This reuptake inhibition is distinct from other categories of medications, such as serotonin reuptake inhibitors, which primarily target serotonin levels in the brain, or anxiolytics, which are generally used to treat anxiety. The classification as an opioid antagonist is also incorrect, as Bupropion does not have any significant interaction with opioid receptors. Thus, recognizing Bupropion's classification as a DNRI is essential for understanding its therapeutic uses and effects.