You should not drink beer when you are menstruating because although beer contains relatively little alcohol, it does contain this ingredient, and alcohol can cause increased intoxication because the liver’s detoxification enzymes are declining during menstruation, which can lead to an increased burden on the liver. Drinking alcohol during menstruation can also lead to increased blood circulation, which can cause an increase in menstrual flow. Sensitive patients can also cause severe menorrhagia, which can lead to a condition of transient anemia. Therefore, it is important not to drink beer when you have your period. There are some beers that have been refrigerated, and if you drink such a beer, the damage will be even greater. It will stimulate the contraction of the smooth muscle of the uterus, which may clinically lead to dysmenorrhea, or can make the menstruation appear to be dripping. You should not drink even beer when you are having your period.