Astellas Pharma, Inc. engages in the research, development, manufacture, import, and export of pharmaceutical products. Its products focus on therapeutic fields that include transplantation, immunology, infectious diseases, urology, oncology, neuroscience, diabetic complications, and metabolic diseases. The firm's global brands include Prograf, Vesicare, Protopic, Harnal, and Funguard. The company was founded by Kenji Yamanouchi in April 1923 and is headquartered in Tokyo, Japan.