Daiichi Sankyo (第一三共株式会社) is a company specializing in the research, development, and manufacture of innovative pharmaceutical products. It operates through 6 business units: Japan, Oncology, EU Specialty, ASCA, American Regent, and Daiichi Sankyo Healthcare. The Japan Business Unit focuses on providing pharmaceuticals, vaccines, and generic drugs. The Oncology Business Unit delivers oncology medicines and provides support services for patients and caregivers. The EU Specialty Business Unit offers cardiovascular disease pharmaceuticals. The ASCA Business Unit specializes in primary and oncology business expansion. The American Regent Unit develops sterile injectable products. The Daiichi Sankyo Healthcare Unit produces OTC drugs, skincare, oral care, and food products.