When they gave me the prep, it was basically a gallon jug of laxative. I was to drink half of it the night before, and half of it the morning of. They gave me a specific cut off time to finish it. I followed their schedule, and actually started a little earlier than they said.

The first night there was a LOT of uncertainty. I spent a good two hours on the toilet. When I thought it was safe to get up, I learned that situation was temporary. If you get up, and you have the slightest urge to go, do not wait. Do not think that this is a normal poop that you can hold in. The urgency will be sudden, amplified, and dire. When the urge comes, make haste.

At any rate, I started a little early the following morning, because I was familiar with how long it would take to become whole again after the last drink. The result was that I didn't have to make again before the procedure. Pay attention to how your body reacts the night before.

A friend of mine went in a diaper. She assured me that I would shit myself on the way there, because she did. She was wrong. If anyone tells you that no one drinks the whole prep, prove them wrong. Drink it all.