Zuo Gui Wan has the effect of nourishing the yin and tonifying the kidney, and can be used to treat gynecological diseases with kidney yin deficiency. Zuo Gui Wan is composed of Radix Rehmanniae Praeparata, Semen Cuscutae, Radix Achyranthis Bidentatae, Colla Corii Asiatica, Colla Corii Asiatica, Cornu Cervi Pantotrichum, Fructus Lycii, and so on. It is used for true yin deficiency, lumbar soreness and knee weakness, night sweating (abnormal sweating after going to sleep and stopping sweating after waking up), god fatigue (mental weakness) and dry mouth. In gynecological diseases, there are evidence of deficiency of kidney yin in disintegration (excessive menstrual flow or dribbling), infertility, and evidence before and after menopause, which can be treated with Zuo Gui Wan. The adverse effects of Zuo Gui Wan are not clear, patients with cold and fever, as well as pregnant women and children, should not use this drug. Patients who need to use this medicine should be under the guidance of a doctor and should not use this medicine without authorization.