. . . it's that danged prep solution you have to drink beforehand. Ugggggh, that's some nasty stuff!!!! Having a colonoscopy tomorrow and I started that bowel prep drink. Add 6 ounces of this nasty stuff to 10 ounces of water and (gag)drink(gag). And have to repeat tomorrow at 4:00a. Nice. I have heard many people say how nasty this stuff is - they were NOT kidding!!