There is no good or bad difference between the effects of Zuo Gui Wan and Liu Wei Di Huang Wan, and better results can only be achieved by using the right medication for the right condition. 1. Zuo Gui Wan: has the effect of nourishing the kidney and tonifying yin. It is used for lumbago and knee weakness caused by deficiency of genuine yin, night sweating (sweating abnormally after going to sleep, and sweating stops after waking up), fatigue (lack of spirit) and dryness of the mouth. Contraindicated for pregnant women and forbidden for children. 2. Six-flavored Di Huang Pill: has the effect of nourishing yin and tonifying the kidney. It is used for dizziness and tinnitus caused by kidney yin deficiency, lumbar and knee soreness and weakness (a feeling of soreness and weakness in the lumbar region and knees), bone vapor and tidal fever (a burst of heat, feeling that the heat is coming from inside the bones to the outside), and night sweating and seminal emission. If medication is needed, it should be identified by a doctor and standardized treatment should be followed.