Which of the following is classified as an atypical antidepressant?

Wellbutrin, also known as bupropion, is classified as an atypical antidepressant because it differs significantly in its mechanism of action and side effect profile compared to traditional antidepressants, such as SSRIs (Selective Serotonin Reuptake Inhibitors) or SNRIs (Serotonin-Norepinephrine Reuptake Inhibitors). While typical antidepressants primarily target serotonin or norepinephrine neurotransmitter systems, Wellbutrin primarily works on the dopamine and norepinephrine systems, making it distinct in its approach to treating depression. Additionally, it is often used in managing depression in patients who may not tolerate traditional antidepressants well or are looking to avoid certain side effects, like weight gain or sexual dysfunction. The atypical classification denotes its unique properties, which can be particularly beneficial in various patient populations.