Rhizome of Acorusgramineus Soland., family Araceae.
Rhizome flat-terete, twisted, branching, 3-20 cm long, 0.3-1.0 cm in diameter.
Outer surface grey-brown, with many protruding nodes, internode 0.2-0.8
cm long. With remnant fibrous roots or spotted fibrous root scars and
triangular leaf traces arranged alternately from left to right, or leaf
base fibers. Prepared as transverse-cutting. Section appearing reddish,
endodermis rings visible, brown oily spots scattered. Aromatic in odour.
Bitter and acrid in taste, warm in nature, and attributive to heart and
1. Deprive dampness from the upper-jiao to increase appetite: For stagnation
of dampness in spleen-yang with feeling of fullness and oppression in
the chest and abdomen, anorexia and fatigue; for vomiting, diarrhea and
abdominal pain of cold-dampness origin, and dysentery with inability to
2. Eliminate phlegm to wake the patient from unconsciousness and tranquilize
the mind: For coma of sthenic type with the accumulation of dampness and
turbid substance or phlegm. Recently, its volatile oil is applied for
pulmonary encephalopathy, various kinds of infantile encephalitis and
insanity. Also for amnesia, palpitation, insomnia, tinnitus,
chronic bronchitis and bronchial asthma.
1. Small dose of its volatile oil exerts a sedative effect on experimental
animals, which is synergetic with sodium pentobarbitaL
2. Promoting the secretion of digestive juice, inhibiting the abnormal
fermentation in the gastrointestinal tract, and relaxing the spasm of
intestinal smooth muscles.
Injection (2 ml containing 10 mg of volatile oil): 2-4 ml IM 2-6 times
a day; or 16-20 ml added in 10% glucose solution 500 ml IV for drips 1-2
times a day for pulmonary encephalopathy and encephalitis.