I pretty much agree with everyone else, except I can't say I was 100% the next day.  75-90% maybe, but it was a day or two before I really felt 100%  I think a lot of that depends on how you react to the meds.

Plus a lot of mine was apprehension.  Son had one as a teenager for a bleeding polyp.  We lost Dad to colon cancer.  So I was .... less than enthusiastic.

I didn't suffer much from the effects of the prep. but I HATED the potion.  I had a jug the day before an supposed to down a jug the morning before.  I didn't get the second one finished, but got enough. They tell me the prep depends a lot on the Doc and what they are looking for.