Cascara sagrada

Cascara sagrada (Frangula purshiana) is a shrub. The dried bark used to be FDA approved as an OTC laxative for constipation. It’s now used in supplements.

Cascara sagrada contains chemicals that stimulate the bowel and have a laxative effect.

People use cascara sagrada for constipation, emptying the colon before a colonoscopy, and other conditions.