Polyethylene glycol 3350 with electrolytes
"I'm 26 and preparing for my first colonoscopy looking to confirm why I have so many problems with my 'tummy'. Moviprep starting working within 45 mins for me. It tastes vile and was really hard to get down. However, other than being confined to the bathroom I'm doing ok. For someone who's used to spending a lot of time in the bathroom this is actually a bit of a breeze. Yes you feel a bit weak, but it isn't the same as when you have a stomach bug. Be prepared to drink something that tastes awful though. If you pretend it's a drinking game it's tolerable."