irritable bowel syndrome
"If you have irritable bowel syndrome then you know how it can seem to pop up at any time. This is a sub-lingual medication. As such, it works very quickly to stop spasms in the colon.  As my physician explains it: it slows down the action of the colon. Antidiarrheals will completely stop the action of the colon. You  don't want to stop the action of the colon. "