The Chinese Pharmacopoeia stipulates that the dosage of red ginseng for decoction is 3~9g, and the exact dosage is decided by the doctor according to the individual’s physique and condition. Red ginseng has the basic effects of tonifying vital energy (replenishing the root energy of the body), restoring the pulse and stabilizing deficiencies (restoring the normal pulse and preventing substances from coming out), tranquilizing the mind and promoting intellectual development, tonifying the spleen and benefiting the lungs (replenishing the spleen and lungs), and generating fluid and nourishing the blood (replenishing the body’s fluids and blood). It is used in the treatment of deficiency of vital energy, shortness of breath and fatigue (lack of spirit), weak pulse, sagging of middle qi (deficiency of spleen and stomach qi, with symptoms such as falling of internal organs), thirst due to injury of fluids, thirst due to internal heat (internal fever accompanied by symptoms such as excessive eating, drinking and urination), deficiency of qi and blood, palpitation (rapid heartbeat, often accompanied by panic), palpitations (rapid heartbeat, with panic), insomnia, excessive sleep and forgetfulness, and other conditions. The adverse effects of red ginseng are not clear, and it should not be used together with wulingzhi and quinquefolium. It should not be used by those who have solid or hot symptoms but are not deficient in positive qi. Drugs must be used under the guidance of a doctor, do not blindly self-medication, so as not to delay the condition.