Is it normal to have diarrhea after drinking beer?

Experiencing diarrhea after drinking beer is abnormal and may result from ethanol irritating the gastrointestinal mucosa, thereby triggering diarrhea. It could also be due to indigestion or irregular eating habits causing gastrointestinal dysfunction. For diarrhea, oral administration of intestinal-regulating medications—such as bifidobacteria and other probiotics—may be helpful. Additionally, drinking an appropriate amount of warm boiled water can help alleviate diarrhea symptoms.