Zuo Gui Wan can be used for the evidence of true yin deficiency, favoring kidney yin deficiency, and 15-year-old people with kidney deficiency to the evidence can take Zuo Gui Wan under the guidance of a doctor. Zuo Gui Wan is composed of Szechuan hyssop, Dahuai Shuidi, wolfberry, deer gum, Chinese yam, cuscuta, cornelian cherry, turtle gum, which has the effect of tonifying the kidney and nourishing the yin, benefiting the medulla oblongata and filling up the essence. Zuo Gui Wan can be used for the symptoms of true yin insufficiency, such as dizziness and dizziness, spermatorrhea, lumbago, weakness of legs, night sweating (abnormal sweating after going to sleep, but sweating stops after waking up), spontaneous sweating (involuntary sweating during the daytime, sweating aggravated by slight movement), dry mouth and tongue, thin pulse, red tongue with little moss. In this formula, Radix Rehmanniae Praeparata benefits essence and nourishes kidney yin; Cornu Cervi Pantotrichum fixes secret essence and nourishes liver and kidney; Chinese yam benefits yin and nourishes spleen, fixes essence and nourishes kidney; Deer Antler Gum warms and strengthens kidney yang and nourishes essence and blood; Tortoise Plate Gum replenishes marrow and nourishes yin; Lycium barbarum benefits essence and blood and nourishes liver and kidney; Semen Cuscutae assists essence and nourishes liver and kidney; Szechuan Knee benefits liver and kidney and strengthens tendons. Contraindications and adverse reactions to this product are unclear, please use the drug under medical supervision to avoid adverse reactions.