Calamus; Acorus calamusToday Calamus is used for the relief from headaches and toothaches. This herb helps ward off exhaustion and fatigue, and can help prevent a hangover. Calamus is sometimes used to quell a cough. An infusion of the rhizome can help with fevers and dyspepsia. Chewing the rhizome will ease digestion and clear the voice. It can be used to cleanse and disinfect the teeth. This plant works well for digestive problems such as gas, bloating, colic, and poor digestive function. Though there is no scientific evidence to support this claim, Calamus root has also been used in the treatment and cure of diabetes, when Western medicine has failed to be of use. The Chinese use it for constipation and in India it is used to reduce fever, calm asthma and bronchitis, and is used as a sedative. In Ayurvedic medicine, Calamus is used as a "rejuvenator" for the brain and nervous system, as a remedy for digestive disorders, and in the treatment of schizophrenia specifically, Ayurvedic physicians use Sweet Flag to restore tranquillity to the mind (Bhagwan Dash).
This genus is accepted, and is native to Pacific, Asia-Tropical, Asia-Temperate, Africa and Australasia.