Bisacodyl
"Pt 1. I had be constipated for 5 days. I wasn't too worried until I developed a large mass near my belly button, nausea, and overall malaise. First I tried a liquid suppository and it did not work, my gut bomb didn't move. I decided to take 3 dulcolax, but before reading any of these reviews. 3 hours after taking the pills my stomach cramps started. They didn't hurt too bad and I could visibly see the poop mass moving. 4 hours in I'm in agony, these are the worse cramps I've had in entire life. With each cramp I'm able to pass one small marble of stool. By 5.5 hours, I'm shaking, vomiting, cold sweating, and during heaves can now push out 2 small marbles at a time. I'm so dizzy and faint that I opt to lay on the bathroom floor."