Dulcolax
"I have IBS-D so when I get constipated it's a serious deal for me. So I go to the store and grab this off the shelf. I take 2 tabs around 2:30pm. I work the night shift so I layed down for a nap. I get woken up at 7pm with these strong stomach cramps. I go to the bathroom and it's just a little gas but I don't move. Next thing I know it's like the next flood is happening. It's only 8:40pm and I've had 3 bouts of diarrhea and I'm nauseous.  Much worse than my IBS. There was nothing sensitive about this medication. Will definitely not use this again."