Standardized senna equivalent to 8.8 mg total sennosides, natural chocolate flavor. Senna is known as an all-natural 'stimulant laxative' (constipation remedy). It acts on nerve endings in the gut wall. These nerves then make the muscles in the intestine contract with more force and more often. When the gut contracts, it moves the contents along faster, and so it reduces constipation. Senna Syrup (Compares to Senokot Syrup): Help patients return to regularity with the formula that's right for their needs. 8 oz. Bottle.