Rhizoma Dioscoreae


Rhizome of Dioscorea opposita Thunb., family Dioscoreaceae.

Rhizome terete or long cambiform, somewhat curved, 15-30 cm long, 1.5-6.0 cm in diameter. Surface with yellowish white cork, and appearing white when the cork is peeled off. Prepared as oblique cutting pieces, white, farinaceous, even, and without striae. Sweet in taste, mild in nature, and attributive to spleen, lung and kidney channels.

1. lnvigorate the spleen and stomach: For deficiency of spleen-energy and stomach-energy with poor appetite, fatigue, loose stools or chronic diarrhea, leucorrhagia, etc.; for febrile diseases with consumption of body fluid or deficiency of spleen-yin and stomach-yin with poor appetite, thirst, dry tongue, diabetes, etc.
2.Invigorate the lung: For lung-deficiency with chronic cough or tuberculosis; for deficiency of lung and kidney with dyspnea and chronic cough, used together with Fructus Corni and Fructus Schisandrae.
3. Invigorate the kidney and preserve the essence: For kidney-deficiency manifested as emission, enuresis, frequent micturition and leucorrhagia.

Pharmacological Action
Its decoction (1:1280) can promote the phagocytosis of leukocyte in vitro.

Administration Decoction: 10-30g.


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Mr. Wang Tao

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