1. counteracting diarrhea. 2. an agent that counteracts diarrhea.
a. agents — medicines used as antidiarrheals in animals. Includes parasympatholytic drugs, e.g. atropine, which act as a spasmolytic or antispasmodic, opiates, protectants and absorbents, e.g. activated charcoal, kaolin and astringents, e.g. catechu, tannic acid. The classification does not include the treatments that are specific for the diseases that cause diarrhea, e.g. antibiotics.