I also had nothing happen until after the second dose, and even then it took a while. It has been many years, so I don't remember exactly how long, but I do remember wondering if anything WAS going to happen. Keep in mind that if you have eaten a limited amount of food in the last 24 hours, there might not be much in your system to get rid of.
The surgeon doesn't work on your colon during the surgery, so even if nothing happens, don't worry about it. Many people don't even have to do a bowel prep right before surgery.
10 years out; 190 pounds lost, 165 pound loss maintained
You don't drown by falling in the water. You drown by staying there.
That is what we used. I drank the bottle and was pooping in 45 minutes!!!
If you have been on a liquid diet, then you may not have much to get rid of.
Good luck with your procedure!!