Anyone familiar with Miralax prep?

Hi all,

I had a colonoscopy today (at the ripe old age of 28) because of recurrent abdominal pain, and a very very strong history of GI diseases (colon ca, celiac, diverticulitis, fistulas, stomach ca, and it's on both sides of my family) Thankfully, everything looked fine. The procedure itself was tolerable, and I'm surprised at how awake/alert I've felt after versed/fentanyl!

However... I had a Miralax (238g in 64oz Gatorade over 2 hours) and Bisacodyl (four 5mg tablet) prep yesterday. I was able to drink the entire solution, but started vomiting 5-6 hours later. It's now been more than 8 hours since the procedure and I still have nausea (but able to hold down clears) and have had 4-5 loose stools per hour since I got home.

My parents have had colonoscopies and remember having discomfort from the need to expel the air, but neither had this much nausea or diarrhea post-procedure. Neither of them used the Miralax prep.

Not looking for any medical advice or anything, just wondering if anyone is familiar with this prep and has heard of similar experiences?