bowel preparation
"Had my 15th colonoscopy on 5/18/17.  My first one was back in 1983 when the procedure was very new.  For me Prepopik was the best prep ever.  The 5oz powdered drinks were not bad at all.
Two nights before the procedure, I drank a 10ounce bottle of magnesium citrate as prescribed.  I had a movement 7 hours later at 4am.  I started my Prepopik (part 1) at 4pm the day before the procedure.  I finished my 5 glasses of Gatorade and apple juice within 90 minutes.  Had 2 movements within 2 hours.  I started my Prepopik (part 2) at 2am the morning of the procedure.  Finished my 3 glasses of apple juice and Gatorade within 30 minutes, and had 2 movements within 1.5 hours.  I had no issues with nausea or cramping.  My colonoscopy started about 8:45am.
Some tips: I have a feeling some folks may tend to over-eat on their last meal day in fear of starvation on their liquid diet day.  This means they will have more to pass the next day.  Try eating lighter meals that day.  Purchase the softest toilet tissue you can find.  It helps.  Also, try applying A&D ointment between movements.  Good luck, and I hope this helps."