"I was on this medication for 3 days; on the 4th day, I was having diarrhea every 20 minutes.  Totally unable to work; literally couldn&#039;t keep anything in.  What I would eat would flush out within the hour. I know this is one of the severe side effects, so I did stop medication.  Worked great; but man, when you can&#039;t work and you can&#039;t keep hydrated....there&#039;s got to be something in between.  Got samples from the doctor, thank goodness, but I hear it is very expensive."