Bisacodyl
"I took this a year ago BEFORE bedtime like the instructions tell you, I woke up in the morning with successful bad cramps in my lower stomach, I got up to go the bathroom luckily my husband followed me thinking it was strange & the pain was that painful I fainted.
Yesterday I was super bloated I had so much gas for hours no idea why & had been toilet few times in the day, then before bed I decided to take 1 tablet to help shift more gas in the night. Woke up at 6am felt fine then about 8am the pains came not as painful as last time but they weren't as bad I would past wind & then suddenly I had to run to the toilet & sit there with the pain like as if everything was moving around the intestines & then it was like sand. It worked but hurts."