The dosage of Koryo ginseng is generally 3~9g/day, and in serious condition, it can be used up to 15~30g/day. Koryo ginseng is the red ginseng produced in Korean Peninsula. It has the effect of replenishing vital energy, tonifying the spleen and lungs (tonifying the spleen and lungs), generating fluids, calming the mind and promoting intellectual development. It can be used to treat lung, spleen and kidney qi deficiency; it can replenish vital energy; and it can also be used to treat qi and fluid deficiency caused by fever. Goryeo ginseng can be taken by decoction with water or by powder, but when taken by decoction with water, it should be decocted first and boiled slowly over a mild fire. Modern pharmacological research shows that ginseng contains ginsenosides, rich amino acids, a variety of trace elements, a variety of vitamins, organic acids and other nutrients. It has pharmacological effects such as anti-shock, cardiotonic, anti-fatigue, memory enhancement, anti-cerebral ischemia, vasodilatation, blood pressure regulation, anti-myocardial ischemia and so on. The drug should be taken under the guidance of a doctor, not self-medication to avoid adverse reactions.