Why Do I Get Diarrhea After Drinking Wine. However, diarrhea after drinking water can reflect a chronic gastrointestinal disease. Drinking alcohol can be safe in moderation, but drinking in excess can have many side effects, including bouts of diarrhea.

The first thing to know is that alcohol is an irritant and it causes inflammation in the gastrointestinal tract. Drinking causes multiple changes to your gi tract that can result in diarrhea, including: The ethanol in alcohol speeds up the digestive process, but some libations are more likely to produce watery poop than others.