The average Imodium a-d cash price is about $9.98 for a supply of: Liquid 1 MG/7.5ML 30 pcs. Get our free Imodium a-d coupon and be eligible to receive a discount. You can reduce your Imodium a-d cost by up to 75% with our free Imodium a-d discount card. Bring it to a participating pharmacy near you to save on your prescription medication.Loperamide is a medicine used along with other measures to treat diarrhea. Loperamide helps stop diarrhea by slowing down the movements of the intestines. Imodium A-D is used in the treatment of sudden diarrhea such as the traveler's diarrhea. Imodium A-D reduces the number of bowel movements, thereby making the stool less watery. Note that Imodium A-D is only used to treat the symptoms of sudden diarrhea and not the cause.