Otsuka Pharmaceutical
Native name  | 大塚製薬株式会社 | 
|---|---|
Romanized name  | Ōtsuka Seiyaku Kabushiki-gaisha | 
| Company type | Public KK | 
| TYO: 4578 TOPIX 100 Component  | |
| Industry | Pharmaceutical | 
| Founded | 1921 (Founded) 1964 (Incorporated)  | 
| Founder | Busaburo Otsuka | 
| Headquarters | , | 
Number of locations  | 69 | 
Area served  | Worldwide | 
Key people  | Tatsuo Higuchi (President) | 
| Revenue | ¥ 1.74 trillion (2022) | 
| ¥ 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.