Hyoscyamine
"When my symptoms first began (about 7 years ago) I suffered through a colonoscopy, sigmoidoscopy, tests for parasites through two different "specialists".  The results were that they couldn't find anything wrong, so I must have IBD.  I was told there was nothing I could do but "learn to live with it".  I found that it took 13 Imodium at one time to stop an "episode".  Returned to the MD and begged him to prescribe something / anything to help - Hyoscyamine Sulfate!  It works!  I take two when the problem starts and within about a half hour it has stopped. I recommended it without hesitation!  The only problem is that my insurance won't cover it and I just had to pay $150 for 180 tablets.  "