constipation
"I will never take this medication again.  I took it around 9pm and woke up around 1am with some light cramping.  About 15 minutes later, I was doubled over in pain.  I have a pretty high tolerance for pain but the pain was so bad with this laxative that I was on the verge of vomiting/passing out. It did clear me out and I felt fine after and the next day.  But the pain was so bad that it is just not worth it for me to take this again."