It is not recommended to take ginseng when you have a cold. Because cold is mainly a real disease, which is caused by the invasion of foreign wind and evil (possibly wind-cold, wind-heat, or dampness), the body is dispelling the evil and the positive energy is usually sufficient. Therefore, what is needed at this time is to dispel the evil, and Chinese medicine is generally applied to dispel the wind and dispel the evil, possibly adding drugs to dispel cold, clear heat or dampness. Only when the cold is accompanied by symptoms of qi deficiency, or when it is identified as a qi deficiency cold, can ginseng or other qi-supplementing drugs be added to the cold medicine, but it is not appropriate to take ginseng alone at this time. Therefore, on the whole, ginseng is not recommended for cold and flu patients.