豨莶草:农历五六月间采叶,取河中长流水洗净晒干,用蜂蜜与无灰酒共同拌匀,第二天早上蒸三炷香。这样蒸九次,记载清楚,晒干,磨成细粉1斤。此药能驱除肝肾之风邪,治疗四肢麻痹,骨痿弱,膝部酸冷;又治口眼歪斜,免除半身不遂,安定五脏,生长毛发。唐代张咏在给皇帝进表(奏章)时说: Aesculapia: The lunar month of May harvest leaves, take the river long stream of water washed and dried with honey and ash-free wine, mix well, the next morning steamed three incense. This steamed nine times, documented clearly, dried, ground into fine powder 1 kg. The drug can get rid of liver and kidney wind evil, the treatment of limb paralysis, weak atrophy, knee sore; and Kouyanwaixie, relieve bouts, stable five internal organs, growth of hair. In the Tang Dynasty, Zhang Yong said to the Emperor when entering the table (memorial):