This is my 5th colonoscopy, and I've never had a prep problem until now. I've taken Golytely, Halflytely, and Moviprep, and never had a cramp or nausea, and was Mountain Dew clean before midnight, and was able to sleep all night. This Suprep is awful tasting, gave me cramps worst than a gall bladder attack, and didn't work for over 2 hours. It made me so nauseated, I threw up after the first dose. It's 2018 . . .surely there is a better way.