For some people with weak gastrointestinal function, long-term consumption of propolis is not recommended. Because propolis is a cool substance, long-term use will have side effects on people with cold stomach, such as nausea and vomiting. In addition, for some pregnant women, it is still necessary to eat carefully, because the content of hormones in propolis is relatively large. If pregnant women eat it, it may stimulate the secretion of estrogen in the body and even cause uterine contraction, thus affecting the development of the fetus, which is not conducive to the health of the fetus. The side effects of long-term use of propolis also vary from person to person. Especially for some allergic people, if they take propolis for a long time, they may have allergic symptoms, such as dizziness, itchy skin and shortness of breath. In addition, for infants and young children, it is not recommended to take propolis, because their immune system is not fully developed, and they cannot absorb the nutrients of propolis, which will cause harm to their health.