Eisai Co., Ltd. engages in the research and development, manufacture, sale, and import and export of pharmaceuticals in India. It also offers prescription medicines. In addition, the company focuses on neurology and oncology and therapeutic areas. The company was formerly known as Nihon Eisai Co., Ltd. and changed its name to Eisai Co., Ltd. in 1955. Eisai Co., Ltd. was incorporated in 1941 and is headquartered in Tokyo, Japan.