Zuo Gui Wan has the effect of nourishing the kidney and tonifying yin. Zuo Gui Wan contains Radix Rehmanniae Praeparata, Semen Cuscutae, Radix Achyranthis Bidentatae, Colla Corii Asiatica, Colla Corii Asiatica, Rhizoma Gastrodiae, Cornu Cervi Pantotrichum, Fructus Lycii, and other ingredients, which are nourishing the kidney and tonifying the yin, and are clinically used for the insufficiency of true yin, lumbar acidity and weakness of the knees, night sweating (abnormal sweating after falling asleep, and stopping of sweating after waking up), mental fatigue (lack of mental clarity), and dryness of the mouth and tongue. The adverse effects of the drug are not clear, and should be taken under the guidance of a doctor. And pregnant women should not take, children are prohibited. Avoid greasy food. It is forbidden for those who are allergic to this product, and allergic people should be cautious. In addition, patients with colds should not take it. If there is no improvement in the symptoms during two weeks or during the period of taking the medicine, or if the symptoms worsen, or if new serious symptoms appear, stop taking the medicine immediately and go to the hospital for consultation. The use of this product is prohibited when there is a change in its properties.