Imodium Capsule is used for Loose stools, Non infective diarrhea, Mild travelers diarrhea, Idiopathic diarrhea in aids patients and other conditions. Imodium Capsule may also be used for purposes not listed in this medication guide. Imodium Capsule contains Loperamide as an active ingredient. Imodium Capsule works by slowing down the movement of an overactive bowel.