About Kaolin Gastrointestinal agents, Antidiarrheals, Intestinal adsorbents Mechanism of Action of Kaolin Kaolin is an adsorbent antidiarrhoeal agent that binds to and traps bacteria and its toxins in the gut. It also binds to water in the gut, which helps to make the stools firmer About Pectin Gastrointestinal system, Antidiarrheals Mechanism of Action of Pectin Pectin binds substances in the intestine and adds bulk to the stools