About Otsuka

Otsuka Pharmaceutical was established in 1964.
At Otsuka Pharmaceutical, we are committed to a holistic approach to health and well-being of people and are striving to create innovative, thoroughly-original pharmaceutical and nutraceutical products based on our corporate philosophy
"Otsuka-people creating new products for better health worldwide".

Message from Top Management

As a total healthcare company
we strive to support the unique potential of each individual

Otsuka-people creating new products for better health worldwide

Otsuka People Talk

Otsuka employees share their stories of continually rising to the challenge

Corporate Profile

Timeline of Otsuka's History

Contact Addresses in Japan

Affiliated Companies Around the World

Production Activities

Business Collaborators

Corporate Governance

Other Information

Corporate brochure

Download our corporate brochure

(PDF：8.19MB)

Otsuka Virtual Factory Tour (Japanese)

News Releases

Nutraceuticals

Efficacy of Lactic Acid Bacterium ONRICb0240 Against Gingivitis ConfirmedA collaborative study with the Institute of Science Tokyo brings new hope for oral care

Otsuka Pharmaceutical Receives Judges' Special Award at MAFF's 10th Shokuiku Activity Awards "MoguMogu Town" App Recognized for Promoting Food and Nutrition Education

Otsuka Pharmaceutical Recognized as a "Food and Nutrition Education Practice Excellent Corporation 2026" by the MAFFLeveraging Proprietary Expertise and Services to Promote Health through Nutrition