Bisacodyl
"Well, I've been constipated for about a week and a half so I decided to take dulcalax. I've taken it before and it wasn't that bad but this time, I think I would've rather have gotten shot. I took it about 10pm last night and then I went to sleep. I woke up this morning about 5 shaking, sweating, nauseated and I had the worse pain I think I've ever felt. It is now 9:30 and I'm still throwing up so bad I can barely leave the bathroom. I will never take these again!!!"