I'm new and feel like I'm intruding because I don't have Crohn's, but a family history of colon cancer that led me here prior to a colonoscopy. Not sure that I contribute much more than to say the things from this forum that really helped me with the colonoscopy preparation.
I'm a night owl, and my nurse consult said I could take both doses of MoviPrep the night before. But the large number of side effects (distension, nausea, sleep trouble, etc) that increase when taking both at once steered me toward a split dose (evening + morning).
I appreciated the advice of using chicken broth to chase away the MoviPrep aftertaste. MoviPrep wasn't good, but endurable when I chilled it for hours. It gets a little worse each drink, but still tolerable - I've had food that tasted worse.
It took about an hour to kick in. I had a book in the bathroom that I'd read, which made life easier while my colon did it's thing. And not to be gross, but flushable wipes (like baby wipes, but designed for the toilet) are really nice. You'll be headed to the bathroom for a dozen or so times in a row, every few minutes, and those are much more comfortable to use than toilet paper. Overall "flushable wipes" were a really important find.
The rest wasn't so bad - I got through a day of no food easier than I thought. I stocked up on apple and white grape juice, and brought lemon-lime gatorade to work. I'm glad I drank water, juice and gatorade so often - it kept my stomache from being empty, and made it easier.
I suppose one of the more unusual things for me is how well I remembered before and after the "concious sedation" they give you. After wheeling you in for the procedure (with an IV already hooked up), they attach heart monitors and fit an oxygen tube under your nose - they told me because of slower breathing during the procedure.
Hope that helps those of you who helped me prepare for my colonoscopy. Best wishes.