Rhizoma Alismatis. Part used: Rhizome. Known as Water Plantain Rhizome. Entering meridians: Kidney and Bladder. Ze Xie promotes urination, leaches out dampness, settle ministerial fire in the kidneys by draining damp-heat from the lower Jiao and drains kidney fire. All Phoenix Medical dry authentic herbs and concentrated herbal granules are free of sulphur, herbicides and pesticides.