hi your problem arises from refermentation from the sugars and the beer yeast its just like having your own brewery working in your stomach till your cork cant hold it back anymore and away it all goes. do hope this helps you. good luck
why do i get diarrhea if i eat something sweet after drinking a beer? . i've had ibs for many years but take medication that generally eliminates all symptoms. however i've noticed over the years that i often suffer a somewhat severe if short-lived bout of diarrhea within a couple hours after consuming something sweet (fruit included) after drinking a beer! i have no problems with either sweets or beer as long as i don't consume them close together. this seems strange to me; any idea what might be going on?