(Rhamnus purshiana) Cascara Sagrada is suggested to be a mild and safe laxative and has been used by American physicians since 1877. American Indians gave the bark its name, which means "sacred bark". Has been used for constipation, regulation and other stomach complaints. Properties Include: Anthriquinone, B-Complex Vitamins, Calcium, Cascarosides, Essential Oils, Inositol, Manganese and Potassium.