before the test, after I hear that everything is OK.

BCIpam, thanks so much for the tips. I have a nursing background so I have a tendency to think these things through, and I had already planned to eat light on Saturday. My digestive tract is fairly responsive (I eat plenty of fiber, and almost no refined sugar) so I hope it will be extra responsive on Sunday.

My prep will be Osmo Prep tablets (glad I won't have to drink the icky salty stuff!) starting at 3:00 PM. One thing I am concerned about is getting enough calories via clear liquids without over-dosing on sugar via jello, gatorade, etc. and I do not like sugar substitutes. I guess for one day I shouldn't care too much, but if I eat a lot of sugar on just one day it takes me a few days to recover from the sugar crash with headache, cravings, etc.

The clear liquid diet instructions say "NO RED OR PURPLE LIQUIDS" (bold and underlined), in reference to the juices, jello and popsicles . Anyone know why?