calamus is a plant. the foundation (rhizome) is used to make medicinal drug.

despite safety concerns, calamus is used for gastrointestinal (gi) troubles which include ulcers, irritation of the belly lining (gastritis), intestinal gas (flatulence), disappointed stomach and loss of appetite (anorexia). calamus is also used as a chilled medication (sedative), to induce sweating, and to treat rheumatoid arthritis and stroke.

a few humans chunk calamus to eliminate the scent of tobacco, as a stimulant, to increase their experience of well-being, and as a hallucinogen.

some people practice calamus without delay to the skin to treat positive skin illnesses.

in meals, calamus is used as a spice.

different names:
acore odorant, acore olorant, acore roseau, acorus americanus, acorus calamus, acorus gramineus, acorus roseau, bach, belle-angélique, cálamo, cinnamon sedge, flagroot, gladdon, grass-leaf sweetflag, grass myrtle, kalmus, myrtle flag, myrtle sedge, sadgrantha, candy calamus, sweet cane, sweet cinnamon, candy flag, candy grass, sweet myrtle, sweet root, sweet rush, candy sedge, ugragandha, vach, vacha, vachha, vaj, vayambur.

insufficient proof to rate effectiveness for:
upset belly.
urge for food stimulation.
pores and skin problems.
other situations.

extra evidence is wanted to price the effectiveness of calamus for these uses.