A lot of Docs are switching to a 'split prep' that's infinitely more tolerable than drinking a gallon of this miserable stuff. I had my 3-year followup in August and was delighted to be able to use this newer procedure.
It starts on the evening before the procedure. You take 4 inexpensive laxative pills (Dulcolax) and a couple of hours later, mix a bottle of Miralax with 64oz of Gatorade. Then you drink an 8oz glass every 15 minutes until half the mixture is gone. That only takes about an hour, or about 5 glasses. (Mixing the Miralax in increases the volume, so you're drinking more than 32oz.) That's it -- you can then go to bed!
Next morning, 4hrs before the procedure, you drink the other half. It's so much easier, because you're only drinking somewhat more than 2qts of the stuff, and it tastes much better than Golytely! And with that vile stuff, you had to drink the whole gallon-plus in one evening!
This method is far more pleasant and there's evidence that it works better, too, because more people are able to follow the instructions and consume every drop. Some people just can't handle drinking an entire gallon, and either get sick or just refuse to finish it all.
Are they still able to put you in la-la land for the procedure? Even though you have had that much to drink such a short time before going under anesthetic?