Eisai Co., Ltd. is a global pharmaceutical company based in Japan, founded in 1941. It specializes in the research, development, and marketing of innovative drugs, particularly in the fields of neurology and oncology. Eisai is known for its commitment to improving patient outcomes and addressing unmet medical needs. The company has developed several notable medications, including Aricept, used for treating Alzheimer's disease. Eisai operates in various countries and collaborates with other pharmaceutical companies and research institutions to advance healthcare solutions worldwide. Its mission emphasizes the importance of patient-centric approaches in drug development.