Colonoscopy prep started Thursday night. The drink is vile. I got half done as required- a total of half a gallon. I went to bed without any results. I got most of the 2nd half done in the morning. Had to fast yesterday too. Just clear liquids. I was sitting on the bed and threw up liquid into my mouth. Ran to the sink and threw up a ton of liquid. I called the clinic and they said they were going to call me because they had to cancel all the day's appointments because of a power failure! It's rescheduled for April. She did say shed have them give me a different prep next time. Hmmm....