第一三共
Daiichi Sankyo was established in 2005 through the merger of and , which were century-old pharmaceutical companies based in Japan. Sankyo Co., Ltd. was founded by Dr. Jokichi Takamine, who patented the isolation of adrenalin. Takamine was also the first president of Sankyo Co., Ltd from March 1913 – July 1922. In 1990, Sankyo acquired Luitpold-Werk Group, a pharmaceutical company based in Munich. In 2019, Luitpold renamed itself after its American Regent brand. American Regent, now based in the United States, is a subsidiary of Daiichi Sankyo.