Rhizoma Arisaematis


Rhizome of Arisaema erubescens (WalL) Schott, A. heterophyllum. Bl. and Pinellia pedatisecta Schott, family Araceae. Prepared by drying after the cortex is peeled off, as crude Arisaema; or by soaking in water and then in ginger juice and alum water to decrease its toxicity, as Arnaema preparatae.

Crude Arisaema: Rhizome oblate, 14 cm in diameter. Surface nearly white; top with shallowed or deep discoidal stem base, surrounded by dotted fibrous root scars; lateral rhizomes of varying size seen on the margin of axial rhizome. Fracture surface white and farinaceous. Arisaema Preparatae: Rhizome irregular or cut as square pieces, pitch-black, somewhat farinaceous. Both are bitter and acrid in taste, warm in nature, toxic or slightly toxic, and attributive to lung, liver and spleen channels

1. Deprive dampness and eliminate phlegm: For phlegm-dampness syndrome with productive cough and thin expectoration, or chronic phlegm-syndrome with productive cough with chest upset.
2. Expel wind-phlegm and relieve spasm: For dizziness due to wind-phlegm, apoplexy due to accumulation of phlegm, distortion of the face, numbness of extremities and hemiplegia due to stagnation of phlegm in the channels, usually used together with Rhizoma Typhonji and Rhizoma Gastrodiae; for epilepsy, used together with Fructus Pipens nzgn and Cornu Bubali
3. Eliminate toxic material, disperse lumps and relieve carbuncle: For skin infection, scrofula and snake bite.

Pharmacological Action
1. Its aqueous infusion or alcohol extract exerts an anticonvulsive effect in mice.
2. Oral administration of its decoction can eliminate phlegm in mice.

Administration Decoction: 6-9g.
External use: Appropriate amount.


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