It is the first medicine monograph in China, which divides medicines into three classes, i.e. upper, medium and lower, according to the three efficacies of health care, cultivation of temperament, and curing of diseases. The upper class has the main efficacy of health care, and responds to heaven, e.g. achyranthes, and asarum; the medium class which plays a supportive role mainly cultivates temperament and responds to people, e.g. centella, and angelica root; the lower class which plays an adjuvant role mainly cures diseases and responds to the earth, and is not suitable for long-term use.Compendium of Materia Medica
There are a total of more than 2,000 books and pharmacopeias related to TCM, on which more than 10,000 medicinal materials and prescriptions, and the best applications of Chinese medicines in the past 1,000 years are recorded. Among these works, the most authoritative ones are Compendium of Materia Medica compiled by Li Shizhen, a famous doctor in the Ming dynasty, and Chinese Pharmacopoeia compiled by the Chinese Pharmacopoeia Commission after the founding of New China. According to Compendium of Materia Medica with a total of 52 volumes, which was compiled by Li Shizhen in the Ming dynasty and published in 1590, “folium mori has the efficacy of curing dysentery, skin ulcer and other injuries”. According to Chinese Pharmacopoeia, “radix zanthoxyli has the efficacy of detoxification, and relieving swelling and pain”.