First Colonoscopy failure. Very bummed

I did a 2 day prep with Miralax, Magnesium Citrate and Bisacodyl and there was still stuff in me, so they weren't able to do the colonoscopy. The reason I was having the colonoscopy for severe constipation in the first place. Has this happened to anyone else? What prep might they prescribe for the next colonoscopy? I just want to get this over with and get on with some treatment that brings some relief. Any input would be appreciated

Someone else on here has a similar problem with really bad constipation, and rather than starting the day before, which is normal, s/he goes on a liquid diet and laxatives TWO full days before the procedure.

Although, I don't know what they would see on one that would indicate why you have constipation. If you have a kink in your guts, that's going to be in your small intestines, as will a hernia. And slow movement won't show up on a scope. Seems like a bit of a waste of a procedure to me (unless you're already middle aged, at which point they want to do one on everyone as a baseline to compare to later in life); a better bet would seem to be something like a barium contrast or pill camera, where they can test how fast your gut functions (in the case of the camera, they can also see in there as it goes down). If it gets to a spot and stops, that would be a pretty good indication that you have a blockage or a kink. If it goes through, only really slowly, then you're working too slow.

Now that's a new I've never heard. My trouble is I get very nauseous. And as time goes on without solids in my system I get even more nauseous and develop a major headache as a result too. I'm usually a mess going into a colonsocopy!

I'll have to check into this Moviprep for my next test. It's not for 2 years and by then I'm hoping the orange flavored prep that's been approved in Canada gets approved down here in the US. But if it's not I'll remember this Moviprep.