I did my colonoscopy earlier this year. I had no problem with the procedure. Versed I assume is the stuff used to clean you out. Other than tasting worse than garbage, I didn't have any problems. I made sure they knew that I had PD and needed to take my medication to even get there. That was not problem but they told me to only drink enough water to get the pills down. Again no problems. If you have a sensitive stomach you may have trouble because there is nothing in your stomach. Good Luck, and it isn't as bad as it sounds.

GregD