The efficacy and function of dandelion in water is to clear away heat and detoxification (removing heat, poison and evil from the body), reduce swelling and dissipate lumps, etc.. Its contraindications are prohibited for those who are allergic to this product, allergy sufferers should be cautious, and should not be overdosed. Dandelion, also known as dandelion grass, bed-wetting grass, etc., is the dried grass of dandelion in the family of Asteraceae, which is bitter, sweet, cold in nature, and belongs to the liver and stomach meridians. It has the effects of diuretic and diaphoretic (improving the problem of dribbling in urine and the problem of small amount of inaccessible urine), subduing swelling and dispersing lumps, clearing heat and removing toxins. This product is mainly used for the treatment of furuncles (sores mostly occurring on the limbs or face, with small shapes and deep roots, as hard as nails) carbuncles, breast carbuncles, internal carbuncles, feverish gonorrhea (burning and stinging pains evident in urination, accompanied by frequent urination and urgent urination, and discomfort in traction of the lower abdomen) astringent pains, and jaundice with dampness-heat and jaundice, and other conditions. The adverse reactions of this product are not yet clear. Note that this product is prohibited for those who are allergic to this product, allergic individuals should be cautious. Excessive dosage of this product may cause slow diarrhea. Dandelion can be soaked in water to drink tea, but the effective components of the Chinese medicine soaked in water to drink when the precipitation is limited, it is difficult to achieve the effect of treatment of disease, if there is discomfort, it is recommended that the hospital, under the guidance of physicians standardized treatment, do not take medication without authorization, but also do not blindly use Chinese herbs soaked in water to drink, so as not to delay the condition.