What is the difference between Liuwei Dihuang Pill and Zhibai Dihuang Pill?

Liuwei Dihuang Pill and Zhibai Dihuang Pill are both used to treat kidney yin deficiency and kidney yin deficiency. There is still a certain difference between the two drugs. Liuwei Dihuang Pill is mainly used for patients with kidney yin deficiency and deficiency fire. Zhibai Dihuang Pill is based on Liuwei Dihuang Pill and adds two drugs, Cortex phellodendron and Rhizoma anemarrhenae, to increase the effect of nourishing yin and clearing heat. It is mainly aimed at patients with severe yin deficiency and fire excess. In terms of symptoms, Liuwei Dihuang Pill is mainly used for kidney yin deficiency, dizziness, tinnitus, soreness of the waist and knees, bone steaming hot flashes, night sweats and spermatorrhea; Zhibai Dihuang Pill is mainly used for yin deficiency and fire excess, hot flashes and night sweats, dry mouth and sore throat, short red urine, etc. In addition, Zhibai Dihuang Pill can also be used for kidney yin deficiency, damp-heat downpour patients, Liuwei Dihuang Pill has no such effect.