Calamus Root is most widely used from the rhizomes. The scientific name is Acorus calamus while common names are Sweet flag, Sweet sedge, Grass myrtle, Myrtle flag, Sweet grass, Sweet myrtle, Sweet rush, Sweet root, Sweet cane, Gladdon, Myrtle sedge, and Cinnamon sedge. The active constituent of Calamus is asarone.
Calamus is used in connection to digestive disorders such as ulcers, gastritis, flatulence, and acute and chronic dyspepsia. Calamus can also be a stimulate to digestion and appetite.