Sophora flavescens

Sophora flavescens (common name: shrubby sophora) is a plant in the genus Sophora, a genus of the Fabaceae family, that contains about 52 species, nineteen varieties, and seven forms that are widely distributed in Asia, Oceanica, and the Pacific islands. About fifteen species in this genus have a long history of use in traditional Chinese medicines. Sophora flavescens root is known as Ku Shen in traditional Chinese medicine. Compounds in Sophora flavescens possessing medicinal properties include oxymatrine, matrine and sophoridine.

Sophora flavescens is the primary component of Equilibrant, an oxymatrine-based product used for treating ME/CFS.

Antimicrobial properties
It is active against staphylococcus aureus infection.