“…Because of their anionic properties, bile acids can be bound to ion-exchange resins with an affinity for acidic materials. Tennent, Kuron, Zanetti, and Ott (1961) have shown that the feeding of cholestyramine, a quaternary ammonium anion exchange resin, to monogastric animals results in a decrease of serum cholesterol and serum bile acids. In addition, cholestyramine relieves the pruritis associated with biliary cirrhosis and obstructive jaundice (Van Itallie, Hashim, Crampton, and Tennent 1961).…”