Bi Xie (Dioscorea Rhizome) bì xiè · 萆薢

Safety. Several different yam species are sold under this name, most often as fen bi xie and mian bi xie, and the classical descriptions do not treat them as interchangeable; a person should not assume that a packet labelled bi xie is the plant a given text was describing. It is classically avoided in pregnancy and where there is kidney depletion. Its traditional uses are not established by modern research, and prolonged self-directed use of any damp-draining herb without professional review is a poor idea.