Ginseng is not recommended when you have a cold. Because when you have a cold, although the body’s immunity drops, the immune system is relatively active. Due to the invasion of various pathogens from outside, the mucous membrane of the upper respiratory tract shows inflammatory changes of congestion, edema and exudation of inflammatory substances, and the immune response of the body is very strong. Ginseng belongs to the traditional Chinese medicine food, if you eat ginseng at this time will make the blood circulation of the whole body accelerated, metabolism enhancement, will aggravate the respiratory mucosa congestion, edema, inflammatory substances exudation of pathological state, and even cause the respiratory mucosa capillary rupture and bleeding, aggravate the symptoms of colds. Therefore, for patients with weak constitution, ginseng can prevent colds if eaten appropriately, but it is not recommended to eat ginseng when colds strike, otherwise it will aggravate the symptoms of colds.