There is no such thing as a course of treatment for Zuo Gui Wan. There is no strict “course of treatment” for this medicine, clinically, doctors can prescribe a dosage of 2-4 weeks at a time, and if the condition is stabilized, the dosage can be extended after the doctor’s assessment. Therefore, it is recommended to consult a doctor and carry out scientific treatment under the doctor’s guidance. Zuo Gui Wan is a proprietary Chinese medicine composed of Radix Rehmanniae Praeparata, Semen Cuscutae, Radix Achyranthis Bidentatae, Gelsemium Torticosum and other Chinese medicines. It has the effect of nourishing the kidney and tonifying yin. Clinically, it is mainly used for the treatment of true yin deficiency, lumbar soreness and knee weakness, night sweating (abnormal sweating after going to sleep, sweating stops after waking up) spermatorrhea, god fatigue (lack of spirit) and dry mouth. It should be noted that, taking this drug, greasy food; cold patients should not take; pregnant women should not take, children are prohibited; taking the drug for 2 weeks or during the drug symptoms do not improve, or symptoms worsened, or the emergence of new serious symptoms, you should immediately stop taking the drug and go to the hospital; allergy to this drug is prohibited, allergic individuals should be cautious.