Loperamide 2mg (Immodium) tablets for diarrhea in dogs and cats.Small dogs #10-#20 use 1/4 to 1/2 tablet. Medium dogs #30-#50 use 1/2 to 1 tablet.Large dogs #60-#80 use 1 to 2 tablets. NOT TO BE USED IN COLLIE BREEDS OR MIXES.