Hi!! I have never really considered this, but I would have to say that beer, light colored is a clear liquid. Keep in mind beer is also dehydrating, and most of the products used to cleanse the bowel will cause dehydration, therefore starting out hydrated is very important. one other thing is that many procedure require a form of sedative and alcohol in the system is NOT a good idea, not sure the MD would perform the procedure if one had had alcohol in the last 24-48 hrs unless an emergency. I know this is not clear cut. If the debate is just what is a clear liquid then yes beer is, but if it is what is allowed on a clear liquid diet then beer is not included, in my opinion. Hope this helps and makes sense. Take care, good luck, Kim
Kim