Cuscuta is used to treat ailments such as soreness of the lower back and knees, impotence and spermatorrhea, and diarrhea (diarrhea caused by a weak spleen). Cuscuta is the mature seed of the plant Cuscuta sinensis of the family Cuscutaceae, with a sweet taste and flat nature, it has the effects of tonifying the liver and kidneys, consolidating semen and urine (consolidating semen and urine and preventing random leakage), brightening the eyes and stopping diarrhea, and eliminating the wind and dispelling the spots when used externally. The drug is mainly used for the treatment of lumbar and knee soreness and weakness (a feeling of soreness and weakness in the waist and knees) caused by deficiency of the liver and kidney (weakness of the liver and kidney), impotence and spermatorrhea, urination and frequent urination, darkness of the eyes and uncertainty, diarrhea, restlessness of the fetus, leakage of blood in pregnancy and other diseases, and for the external treatment of vitiligo. Adverse reactions and contraindications are not clear. Drugs need to be taken under the guidance of a professional physician, do not use without authorization to avoid adverse consequences.