Swissmedic to decide by end of 2024 on approving lecanemab, the first new Alzheimer’s drug in two decades. The decision faces challenges due to safety concerns and cost-effectiveness. Lecanemab, approved in the US, Japan, China, and South Korea, targets both symptoms and underlying causes of Alzheimer’s. The European Medicines Agency rejected it, citing risks, while the UK authorized it but denied reimbursement. Swissmedic's decision will impact Alzheimer’s patients and drugmakers' investment in new treatments.