irritable bowel syndrome
"I had diarhea from my IBS and Took 4 doses of 100 mg over a period of a week, and had a severe case of pain due to sphincter oddi.  The pain was so severe in chest, back and abdomen and radiated down right arm.  Also severe confusion and fainting prior to pain onset.  The pain was immediate with no warning. I was transported by EMS to the ER.   I was given trial packages that did not include side effects.    It did stop the diarrhea , but the side effects were not worth it."