constipation
"I took the recommended dose (2 tablets) at about 10pm with a glass of water. 



Slept like a baby at night. Woke up feeling fine. Felt slight cramps on the way to work (8am) and then again after at 10.30am I felt the urge to go. First two times I had a normal movement, soft stools released. 20 minutes later I had diarrhea and then I was perfectly fine to carry on with the rest of the day.



Overall it took a while to work on me compared to the rest of the comments below but I had no severe pain."