Toei Shinyaku Co., Ltd. was established in 1973 by Masuro Motoi (or current chairman) as a pharmaceutical company dealing with gauze for disinfection.

In 1996 we came across open-field-cultivated King Agaricus KA21. At that time, Motoi's wife suffered from stomach cancer. By taking King Agaricus KA21, she regained her health. Convinced of its efficacy, she started to sell KA21.

For over 25 years, our company has focused on research and development to pursue the potential of King Agaricus KA21. Having published 32 international papers, we are the world leaders in KA21 research.