Cuscuta can nourish both kidney yin and kidney yang. Cuscuta is pungent, sweet and flat in nature, and is a product that nourishes yin and yang in an even manner. Cuscuta has the effects of tonifying the liver and kidney, consolidating essence and shrinking urine, tranquilizing the fetus, brightening the eyes, stopping diarrhea, eliminating wind and removing spots. It can be used to treat deficiency of liver and kidney. Soreness and weakness of waist and knees, impotence and spermatorrhea, kidney deficiency, fetal leakage, fetal restlessness, deficiency of liver and kidney, darkness of the eyes and tinnitus, deficiency of the spleen and diarrhea, vitiligo and other diseases. Cuscuta in the treatment of lumbar and knee soreness and weakness, can be used with eucommia and other yang tonic drugs, in order to tonify the kidney and yang; in the treatment of liver and kidney insufficiency caused by dark eyes and tinnitus, dry eyes, blurred vision, etc., often used with ripe huangdihuang, goji berry, huangjing, etc.. It should be used externally in the treatment of vitiligo. The adverse reactions of cuscuta have not been clarified, for cuscuta allergy is prohibited, the use of this drug should be under the guidance of a physician.