About Otsuka

Contact Addresses in Japan

Otsuka Pharmaceutical Co., Ltd. has headquarters facilities in Tokyo, Osaka, and Tokushima. In Japan, it conducts product development at four research institutes and production at eight factories.

In addition, its Pharmaceutical Business Division and Nutraceuticals Division each have branch offices distributed around the country in a finely-tuned sales and service organization.

Branch and Sub-Branch Offices