The efficacy of the white flower snake tongue grass is to clear away heat and detoxify, disperse knots and eliminate swelling, diuresis and lymphatic drainage, etc. It can not be used to dispel spots, and it is recommended to take it under the guidance of a physician. The white-flowered snakeroot is the whole grass of the plant of the Rubiaceae family, and its flavor is slightly bitter, sweet, and cold in nature. Attributed to the stomach, large intestine, small intestine meridian. It has the efficacy of clearing heat and removing toxins, dispersing knots and eliminating swellings, inducing dampness and clearing gonorrhea. Clinically used in the treatment of carbuncles and sores (by the congestion of qi and blood, causing local swelling and other symptoms), intestinal carbuncles (carbuncles occurring in the bowels of the intestinal organs, with fever, right abdominal pain, can be felt for the performance of the mass) abdominal pain, heat shower (burning stinging pain during urination, accompanied by urinary frequency, urgency, abdominal traction discomfort) astringent pain, damp-heat jaundice and other conditions. According to the efficacy and action of the drug, it can be seen that this drug can not be used to dispel spots. The contraindication of white flower snake tongue herb is yin gangrene (a general term for a class of slow-acting negative sores and ulcers) and spleen and stomach deficiency and cold should not be used. Adverse reactions are not clear. If you need to use the drug, it is recommended to go to the hospital in time, under the guidance of a professional physician. Self-medication is not recommended to avoid delaying the condition.