Senna Leaves come from the Senna plant, which is a native to North America. Senna Leaf Extract is known primarily for its purgative properties. It works as a natural laxative and helps support digestion. Choosing the Way of Nature: The Real Herbs Senna Leaf Extract Difference Real Herbs Senna Leaf Extract supports digestive health by encouraging bowel movement. Senna Leaf Extract promotes the contraction of the walls of the large intestines which helps push stool through the system and outside the body. Due to this ability, Senna Leaf Supplement is helpful to those who are experiencing constipation.