Otsuka Holdings Co., Ltd. is a Japan-based pharmaceutical holding company engaged in four business segments. The Medical-related segment is engaged in the sale of ethical drugs, the manufacture, sale and export of curative medicines, as well as the research and development of pharmaceutical products. The Nutraceuticals-related segment is engaged in the manufacture, purchase and sale of nutraceuticals-related products. The Consumer-related segment is engaged in the manufacture and sale of consumer products and mineral water. The Others segment is engaged in the manufacture and sale of chemical products, the manufacture, sale and import of measuring equipment, the manufacture of packaging products, the manufacture of synthetic resin molding products, as well as the storage and handling of its products. On October 10, 2013, through a subsidiary, the Company acquired all shares of Astex Pharmaceuticals, Inc., then made it become a wholly owned subsidiary.