... bark is removed), then allowed to dry in the sun. The bark can be used either raw, or after ... bitter and cold properties, and is associated with the Kidney and Bladder meridians. Its main functions are ... to drain damp heat and kidney fire. Among the conditions it is used to treat are diarrhea, ... dysentery, swollen joints in the legs, and jaundice. Phellodendron bark is often used ...