Mao root, or leucaena leucocephala, can be used clinically to treat a variety of hemorrhagic conditions caused by blood heat, as well as damp-heat jaundice and other diseases. The root belongs to a kind of traditional Chinese medicine, for the graminaceous plant leucaena leucocephala’s dried rhizome. It is sweet in flavor and cold in nature. It belongs to the lung, stomach and bladder meridians. It has the effect of cooling blood and stopping bleeding (cooling and moistening the blood to prevent bleeding), clearing heat and diuretic. Because the drug can act to cool the blood and stop bleeding, it has good therapeutic effect on all kinds of hemorrhagic conditions caused by blood-heat paranoia (heat evil causing the blood to go out abnormally), such as coughing up blood, vomiting blood, epistaxis, and urinating blood, and so on. In addition, the drug can also act as a heat-clearing and diuretic, and can also be used to treat diseases such as damp-heat jaundice, heat-lymph (burning and stinging pain evident during urination, accompanied by frequent urination and urgency, and discomfort from traction in the lower abdomen) and astringent pain, coughing with lung-heat, and vomiting with stomach-heat. However, Bai Mao Gen is cold in nature and is not recommended for people with cold spleen and stomach (weak and cold spleen and stomach). The specific adverse effects of the drug are not clear, so it is recommended to consult a doctor before using the drug.