Why is colonoscopy preparation considered the most uncomfortable part?

This question was asked in East Los Angeles, California on 04/12/2012.
Many of my friends and colleagues who have undergone colonoscopy said that bowel preparation is very uncomfortable. May I ask why?

Doctors Answers (1)

Harsha Vittal, M.D.
Answered on: 4/12/2012

You have to drink a large amount of liquid to clean out your colon, and that can cause some bloating.