The Famciclovir market is dominated by North America, which holds the largest regional share at 38%. This is driven by advanced healthcare infrastructure, high adoption of antiviral therapies, and robust R&D investments. The U.S., in particular, benefits from stringent regulatory frameworks and favorable reimbursement policies, ensuring rapid market access for innovative treatments. Meanwhile, the Asia Pacific region emerges as the fastest-growing market, projected to expand at a CAGR of 12.5% during 2023–2030. Key drivers include rising awareness of viral infections, improving healthcare ecosystems, and growing disposable incomes in emerging economies like India and China.