Nature's Answer Slippery Elm is the bark of the Slippery Elm tree. A tree in the Elm family that can live up to 200 years old. It is known and valued for its bark which played an important part in the lives of the Native Americans. The bark was used by the Meskwaki tribe for the sides of their houses and roofs. The Dakota, Pawnee, Winnebago, and Omaha-Ponca tribes used the inner bark for making ropes and cords, as well as for medicinal purposes, such as an eye wash for sore eyes. Nature's Answer brings you this wonder of nature in a convenient, super concentrated liquid extract. Every 2 ml serving of Natures Answer Slippery Elm Bark gives you a potent 1,000 mg of Slippery Elm Bark.