Zuo Gui Wan is effective in treating dizziness, dizziness, back pain and leg weakness through accurate diagnosis, but there is no such thing as “the most effective”. Zuo Gui Wan is mainly composed of Radix Rehmanniae Praeparata, Semen Cuscutae, Radix Achyranthis Bidentatae, Radix et Rhizoma Gastrodiae, Radix et Rhizoma Gastrodiae, Radix et Rhizoma Gastrodiae. It has the effect of nourishing yin and tonifying the kidney, benefiting the medulla oblongata and filling up the essence. It is used to treat dizziness and dizziness caused by deficiency of genuine yin, lumbago and leg weakness, spermatorrhea, spontaneous sweating (involuntary sweating during the daytime, aggravated by the slightest movement of sweating), night sweating (abnormal sweating after going to sleep, and sweating stops after waking up), etc. It is not recommended for pregnant women. This product is contraindicated in pregnant women and is prohibited in children. Adverse effects are not known. It should be noted that this product is a tonic, avoid greasy food during the medication; cold patients should not take; allergic to this product is prohibited, allergic people should be cautious. Drugs should be taken under the guidance of a professional physician, and should not be taken on their own to avoid risks.