An anticholinergic drug prescribed in 2 distinct forms. Hyoscine butylbromide is used to relieve irritable bowel syndrome. Hyoscine hydrobromide is used to control motion sickness and to reduce nausea in Ménière’s disease. It is also used in eye-drops to dilate the pupil before an eye examination or surgery. An injection of hyoscine hydrobromide is often given as part of a premedication because it dries secretions in the mouth and lungs. Possible adverse effects of both forms include dry mouth, blurred vision, drowsiness, and constipation.
Hyoscine |
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