Rhizoma Zingiberis


The rhizome of Zingiber officinale (Wilid) Rosc., family Zingiberaceae.

Rhizome irregular masses, somewhat flat, with finger-shaped branches, 2-7 cm long and 1-2 cm thick. Surface grey-yellow; cork coarse with wrinkles and ring-nodes, and stem base scars and buds at the apex of the branches. Prepared as thin pieces; section showing granular, endodermal rings visible, vascular bundles scattered in spots, oil cells yellow and scattered. Aromatic in odour Acrid in taste, hot in nature, and attributive to heart, lung, spleen and stomach channels.

1. Dispel cold and warm the middle-jiao : For deficiency-cold of the middle-jiao with cold pain in the lower abdomen, and diarrhea of cold type, vomiting, usually used together with Rhizoma Atractyodis Macrocephaiae.
2. Recuperate the depleted yang and dredge the channels: For yang-exhaustion syndrome, but less effective than Radix Acoititi Praeparata.

Administration Decoction:
3-10g. Warm the lung and eliminate sputum: For phlegm-retention syndrome of lung-cold type with cough and thin expectoration, usually used together with Herba Asari and Fructus Schisandrae.


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