The efficacy of Zuo Gui Wan is to nourish kidney and tonify yin, pregnant women and children need to be contraindicated, side effects have not been clarified. Zuo Gui Wan is composed of Radix Rehmanniae Praeparata, Semen Cuscutae, Cortex Pseudostellariae, Cortex Pseudostellariae, Radix Achyranthis Bidentatae, Cornus Officinalis, Rhizoma Dioscoreae, Fructus Lycii, and the auxiliary ingredient of honey. It has the efficacy of nourishing the kidney and tonifying yin, and can currently be used for the treatment of true yin insufficiency, lumbar soreness and knee weakness, night sweating (abnormal sweating after going to sleep, and sweating stops after waking up), and divine fatigue (lack of mental clarity) and dryness of the mouth. Pregnant women need to be prohibited from taking Zuo Gui Wan, so as not to damage the health of the body, not conducive to the growth and development of the fetus. Children should also avoid taking Zuo Gui Wan. The side effects of Zuo Gui Wan have not been clarified, and patients should avoid greasy food and choose light and easy-to-digest food while taking the drug. Zuo Gui Wan may cause drug interactions with other drugs, if you take other drugs at the same time, you need to ask the doctor’s advice. If the symptoms do not improve within two weeks or during the period of taking the medicine, and the symptoms worsen repeatedly, or new serious symptoms, you need to stop using the medicine, go to the regular hospital.