味辛温．通行手足阳明经．功专疗风止痛排脓．得土贝、栝蒌治乳痈．得辛夷细辛治鼻病．得单叶红蜀葵根排脓．得椿根皮、黄柏治妇人湿热带下．其性升散．血热有虚火者禁用．微炒．当归为使．恶旋复花．