Yup, the prep is more certainly the worst part. I had to have a colonoscopy relatively recently (graphic details: suspected Crohn's, turned out I just had benig

Yup, the prep is more certainly the worst part. I had to have a colonoscopy relatively recently (graphic details: suspected Crohn's, turned out I just had benign polyps), and without a doubt, consuming all that KleanPrep the day before was without a doubt one of the worst things I've ever had to do to my mouth and gut. Tried everything I could to mask the flavour, but nothing worked. The most flattering description I can give to the flavour of KleanPrep is that it tastes like rancid cooking oil. And you have to drink a lot of it over the course of the day. Still, the colonoscopy itself wasn't a problem at all. Aside from the discomfort of the idea of strangers fiddling with your nether regions, it's fine, and much better than the alternative of not knowing.