Otsuka is a Japanese pharmaceutical and nutraceutical company founded in 1921. It is known for developing innovative products in the fields of medicine and health, including treatments for mental health disorders and various nutritional supplements. The company operates globally, with a focus on research and development to improve patient care. In addition to pharmaceuticals, Otsuka is involved in the production of consumer products, such as beverages and food items. The company emphasizes sustainability and corporate social responsibility, aiming to contribute positively to society through its diverse range of offerings, including its well-known Pocari Sweat drink.