Taisho Pharmaceutical Holdings Co. Ltd. engages in the management of its group companies which are engaged in the manufacture and sale of over-the-counter (OTC) drugs, food, and miscellaneous goods. It operates through the Self-Medication and Prescription segments. The Self-Medication segment conducts research and development (R&D), manufacture, and sale of OTC drugs, quasi-drugs, food, and general medical and hygiene supplies; and deals with the lease of real estate properties and management of hotels. The Prescription segment handles R&D, manufacture, and sale of ethical drugs. The company was founded on October 3, 2011 and is headquartered in Tokyo, Japan.