I failed my colonoscopy prep and ended up in the ER with violent shaking. I think I was in shock from all the fluid. They told me to drink (over two days) TWO gallons of the Golytely and I think I was drowing from all the fluids. They stressed in the instructions to stay well hydrated with fruit juices while taking the 2 gallons of prep. Terrible experience. I am now waiting on results of a Colorguard.