Otsuka Pharmaceutical
- Country: Japan
- Type: Commercial
- Website: www.otsuka.co.jp
- Update: 05-02
Otsuka Pharmaceutical Co., Ltd. is a Japanese pharmaceutical company founded in 1964 and headquartered in Tokyo. Otsuka's products include pharmaceuticals, medical devices, cosmetics, and food. The famous sports drink Protonix was developed by Otsuka Pharmaceutical.
