My last colonoscopy I had demerol and versed, no pain during or after, PLUS I felt the best I've ever felt for the rest of the day (thank you Demerol). But my new doctor prefers propofol. It puts you to sleep, unlike the demerol/versed, where you are conscious, but feel no pain. You are supposed to have a completely painless experience (due to being asleep) and it wears off quickly. I've spoken to several people that have had colonoscopies and said that when they woke up they had terible gas pains and don't look forward to doing it again. I had no gas pains and I was wanting another colonoscopy the next day. I'd like to hear from people that have had colonoscopies, or know of experiences of patients that have had either so I can try to make a decision on which way to go this time. I think this doctor plans to do a more aggressive colonoscopy than my first doctor and maybe propofol is a better choice.