PHENOBARBITAL; HYOSCYAMINE; ATROPINE; SCOPOLAMINE (fee noe BAR bi tal; hye oh SYE a meen; A troe peen; skoe POL a meen) treats stomach or bowel disorders, such as stomach ulcers, irritable bowel syndrome (IBS), or bowel inflammation. It works by relaxing the muscles of your stomach and bowel, which reduces cramping.


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