People who have a cold, fever, inflammation and diarrhea had better not eat it. 1. Because Lycium barbarum has a very strong warming effect, people with high blood pressure and impatience, or people who eat a lot of meat on weekdays, it is best not to eat it. 2. Lycium barbarum can nourish liver and kidney, but it is not necessary for those with liver and kidney deficiency. 3. After all, it is medicine, and medicine treats diseases by its partiality, which is what we often say. Yin-tonifying drugs are also designed for deficiency syndrome. It is not suitable for those who are healthy and have no deficiency syndrome. Those who are evil and healthy are not empty, so tonics should not be used indiscriminately to prevent "behind closed doors". 4. People with deficiency and cold will have the disadvantage of sliding and diarrhea, and those with unclear internal heat should use it with caution. Some people eat too much medlar, their eyes are red and swollen, and their vision is blurred. Therefore, Lycium barbarum should not be eaten often, which is a three-point poison.