Hi Briar. I had the same prep before my first colonoscopy in October last year. I have to say that was the worst part for me. I got through drinking it(yucky) and spent a good few hours on the toilet. It works is all I can say.
The colonoscopy was a real walk in the park as I don't remember anything but felt great when I woke up. They gave me the best sandwich I have ever tasted afterwards, probably wasn't the best but hey it sure felt/tasted like it at the time.
Good luck with the colonoscopy and don't stress, you'll be in good hands :)
Diagnosed proctosigmoiditis 20cm on 23rd Oct 2015
UC symptoms first appeared in Sept after I quit smoking
Strict SCD lifestyle since diagnosis to achieved remission
Maintenance medication Salofalk foam enema(Mesalazine 1g) twice a week.
Post Edited (OhCrap!) : 1/21/2016 6:51:25 PM (GMT-7)