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

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

Original Global Development

Business Collaborators

Corporate Governance

Other Information

Corporate brochure

Download our corporate brochure

(PDF：9.69MB)

Otsuka Virtual Factory Tour (Japanese)

News Releases

Nutraceuticals

Research Findings on Skin Condition Fluctuations and Recommended Foods During the Menstrual Cycle

Free Outdoor Live Music Event　"EXCITING SUMMER in WAJIKI 2025" Live Stage Will Run on Solar Power Promoting More Sustainable Event Experience

Pharmaceuticals

Otsuka and Lundbeck Issue Statement on U.S. Food and Drug Administration (FDA) Advisory Committee Meeting on REXULTI^® (brexpiprazole) in Combination with Sertraline for the Treatment of Adults with Post-Traumatic Stress Disorder (PTSD)