Otsuka Pharmaceutical

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Otsuka Pharmaceutical Co., Ltd.

Native name	大塚製薬株式会社
Romanized name	Ōtsuka Seiyaku Kabushiki-gaisha
Company type	Public KK
Traded as	TYO: 4578 TOPIX 100 Component
Industry	Pharmaceutical
Founded	1921; 103 years ago (1921) (Founded) 1964 (Incorporated)
Founder	Busaburo Otsuka
Headquarters	Chiyoda, Tokyo , Japan
Number of locations	69
Area served	Worldwide
Key people	Tatsuo Higuchi (President)
Revenue	¥ 1.74 trillion (2022)
Operating income	¥ 150.32 billion (2022)
Owner	Nomura Trust and Banking investment trusts (11.43%) and investment trusts managed by other banks
Number of employees	5,634 (2017)
Parent	Otsuka Holdings Co. Ltd
Website	otsuka.com

Otsuka Pharmaceutical Co., Ltd. (大塚製薬株式会社, Ōtsuka Seiyaku Kabushiki-gaisha) (TYO: 4578), abbreviated OPC, is a pharmaceutical company headquartered in Tokyo, Osaka and Naruto, Japan. The company was established August 10, 1964.