大黄为蓼科多处生草本植物的根状茎 ,味苦 ,气香 ,其性寒凉 ,入血分 ,兼走气分 ,是一味攻积导滞 ,下结毒 ,泻火凉血 ,活血化瘀 ,苦寒攻下的要药 ,因而大黄以攻为用 ,荡涤肠胃实热 ,以通燥结。通里热大实以治惊厥 ,急下存阴治高热神昏谵语 ,性虽趋下 ,但可治实炎上炎之目赤口疮 Rhubarb is a rhizome of many herbaceous plants of the family Polygonaceae. It is bitter and fragrant, and its nature is cold, it enters into the blood, and it also takes off gas. It is blindly accumulating stagnation, lower toxicosis, diarrhea, and cooling blood. Blood circulation, bitter cold to attack the medicine, so the attack for rhubarb use, wash the stomach heat, through the dry knot. Tung Lee Chit-Im Act to treat convulsions, swiftly saves the evil spirits of sinistering the high fever gods. Although sexuality tends to fall, it can cure the inflammation on the eyes of the red mouth sore mouth