Cascara Sagrada bark fluid extract is 18-20% certified organic alcohol. Promotes Healthy Bowel Functions. Cascara Sagrada aged bark is a mild stimulant laxative from nature for the relief of occasional constipation it generally produces a gentle bowel movement in 6 to 12 hours. Nature's Herbs wild countryside premium Cascara Sagrada is wildcrafted in the rich shady woods and damp meadows of North America.