Ayurvedic medicine uses the rhizome of Cyperus rotundus, a perennial plant, for digestive comfort, menstrual ease, and mild stress. These traditional uses do not have backing from rigorous clinical trials.
Common forms include dried rhizome, extract, and powder. People take nut grass as a capsule, liquid extract, or tea, often with meals. Dose depends on the preparation. Safety data are sparse, and interactions with medications are not well documented.