Radix Aucklandiae

 

Source
The root of Aucklandia lappa Decne., family Compositae.

Characteristics
Root terete, 5-10 cm long, 0.5-5.0 cm in diameter; cork peeled off showing yellow-brown in colour, with longitudinal wrinkles and grooves; tip flat and slightly concavity in the middle. The whole root appears as a dead bone. Prepared by crosscutting; section dull brown, exhibiting a light colour peripherally under the deep coloured annular stria, vascular bundles radiately arranged, and oil spots scattered. Strongly aromatic in odour. Acrid and bitter in taste, warm in nature, and attributive to spleen, stomach, large intestine and gallbladder channelL

Indication
Disperse the stagnated liver energy and regulate the stomach, activate vital energy circulation and alleviate pain: For stagnation of spleen energy and stomach energy with fullness and pain in the abdomen, belching, nausea and vomiting; for diarrhea and dysentery with abdominal pain and tenesmus, used together with Rhizoma Coptidis; for stagnation of liver energy and gallbladder energy with hypochondriac distension and pain, usually used together with Radix Bupleuri, Pericarpium Citri Reticulatae Viride, Radix Scuteliariae, etc. Also added to tonics in small dose for promoting digestion and regulating stomach energy.

Pharmacological Action
1. Dihydrocostus lactone isolated from its volatile oil relaxes the spasm of smooth muscles of bronchus and small intestine.
2. Its extract can lower blood pressure.

Administration Decoction: 3-9g (decocted later).


   

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Mr. Wang Tao

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