泻心胃热毒．
苦咸大寒．解心胃热毒．治伤寒时疾热狂．阳毒发斑．（热甚伤血、里实表虚则发斑、紫黑者、热极而胃烂也、多死、活人书、治赤斑烦痛、有犀角大青汤．）黄胆热痢．丹毒喉痹．非心胃热毒勿用．处处有之．高二三尺．茎圆叶长．叶对节生．八月开小红花．成簇．实大