constipation
"Took only one tablet (directions said to take 2) at 9pm after being constipated and miserable for a week.  Two hours later I was doubled over with the most agonizingly painful stomach cramps I have ever experienced. Was on the toilet for 3 hours without any bowel movement, literally screaming from the pain.  I honestly thought I was going to have to call 911. 



Finally had explosive diarrhea for the next hour.  Slept on the bathroom floor and had intermittent diarrhea all night.  I would rather be constipated for a month than go through that again.  Second worst pain I've ever experienced (first worst was a second degree sunburn on my feet and legs)."