Bupropion SR 150mg is a sustained-release tablet commonly prescribed for the treatment of major depressive disorder and as an aid for smoking cessation. It acts by inhibiting the reuptake of dopamine and norepinephrine in the brain, which helps alleviate symptoms of depression and reduce nicotine cravings. This formulation provides more stable blood concentrations throughout the day and is marketed under names like Wellbutrin SR and Zyban. Bupropion SR is carefully selected for individuals who may be sensitive to sedation or sexual dysfunction typically associated with other antidepressants.