ItsAlwaysSomething,
My last colonoscopy prep was supposed to be done with miralax + gatorade.
But I can't stand gatorade, something about it makes me choke. I couldn't imagine drinking more than a few sips.
So I asked my GI if I could substitute the gatorade with anything else, and he told me I could use either apple or grape juice (as long as you could see through the bottle), so that's what I did and although it was still pretty tough to get all those liquids down (and keep them down, haha), I was able to do it.