What is Sophora angustifolia?
Sophora angustifolia_ root extract is the extract of the roots of a plant known as Chinese sophora. Also known as ku shen (a name also associated with the related Sophora flavescens plant), it has long been used in traditional Chinese medicine. Sophora flavescens or Ku Shen, which in Chinese means bitter root, is an herb used in Traditional medicine to treat a wide variety of symptoms, with purported effects on the liver, intestinal tract, and skin.