The bupropion market growth is dominated by North America, which holds the largest share at 45%. Advanced mental health adoption, robust investment in R&D, and favorable regulatory policies drive demand. The region benefits from a mature healthcare ecosystem, high patient awareness, and reimbursement support for smoking cessation therapies. Europe follows with 25% share, driven by aging demographics, strong government funding for bupropion market growth, and a focus on non-opioid antidepressant alternatives. Asia Pacific emerges as the fastest-growing region, projected at 15% CAGR, fueled by expanding healthcare infrastructure, rising bupropion adoption in urban centers, and policy reforms to address mental health gaps.