Rhizoma Acori Graminei


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 stomach channels.

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 take food.
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.

Pharmacological Action
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.

Administration Decoction: 3-10g.
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.


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