Anticholinergic Medicines. Medicines like dicyclomine (Bentyl) can assist relieve unpleasant bowel spasms. They are sometimes prescribed for people who have bouts of diarrhea. These medicines are commonly Harmless but can cause constipation, dry mouth and blurred eyesight. With full FTC compliance disclosure, remember to know our objective is to highlight waiting for link from Social Bookmarking (4)