I too had the same issues; 1st try I couldn't swallow all the liquid and couldn't even go once! Second try I took 5 Ducolax, 1 Citrate of Magnesium... thought I was good, all clear but did the test and was told I was not clean and test had to be redone... I think I am going to opt for the 32 pills and citrate, suggestions welcome, have a call into my surgeon. I also fasted for 3 days.