"黑矾"是一种中药材，其学名是Asarum root (Chinese name: 草麻黄). Asarum is commonly known in China as "草麻黄". In Chinese medicine, it has a reputation for clearing the head and dispersing wind and heat. Black hemp is an important medicinal plant with excellent efficacy. It has a rich content of saponins which have remarkable curative effects on all types of diseases except feverish or chills (as well as those caused by qi deficiency). The active component in it, hydrocarbons, has a very strong effect and can be used for treating many kinds of pain. It is said that the treatment of black hemp can help to relieve severe pain and nausea. Its root is white with a dark brown color. It has a long history of traditional Chinese medicine administration. Although there are still many unknown effects of this medicinal plant, its positive effect in treating febrile diseases and colds was widely recognized by Western medical experts.