Gan Jiang (Dried Ginger)
【Alias】Bai Jiang (White Ginger), Jun Jiang.
【Source】Dried rhizome of the plant Zingiber officinale Roscoe (Ginger).
【Production Areas】Mainly produced in Sichuan, Guangdong, Guangxi, Hunan, Hubei, etc. All are cultivated.
【Plant Morphology】Refer to the entry for “Sheng Jiang” (Fresh Ginger).
【Collection and Processing】Harvested in winter, cleaned, sliced, and sun-dried or dried at low temperatures. Used raw.
【Identification of Medicinal Material】Flat block shape, with finger-like branches, 3-7 cm long, 1-2 cm thick. Surface is gray-yellow or light gray-brown, rough, with longitudinal wrinkles and distinct nodes. Branching often retains scale leaves, and the tips of branches have stem scars or buds. Firm texture, cross-section is yellow-white or gray-white, powdery or granular, with distinct ring patterns in the inner skin layer, vascular bundles, and scattered yellow oil spots. Aroma is fragrant and unique, with a spicy taste.
【Properties and Effects】Spicy, hot. Warms the middle, disperses cold, restores yang, opens meridians, warms the lungs, and transforms phlegm. Used for cold pain in the abdomen, vomiting, diarrhea, cold limbs due to yang deficiency, and cough due to cold phlegm.
【Dosage】Decoction, 3-10 g.
【Precautions】This product is spicy and hot; it should be avoided by those with yin deficiency and internal heat, or blood heat causing reckless movement.
【Selected Formulas】① For wind-cold cough: Gan Jiang (Dried Ginger) 1.5 g. Grind into powder, take with white wine. ② For cold-type stomach pain: Gan Jiang (Dried Ginger) 10 g, Wei Ling Xian (Corydalis) 20 g. Decoction, one dose per day, divided into two doses. ③ For acute gastroenteritis: Corn silk 750 g, Gan Jiang (Dried Ginger) and Huang Bai (Phellodendron) each 6 g. Grind into fine powder, take 3 times a day, 3 g each time, with warm water. ④ For pregnancy-related stomach qi reversal, vomiting, and lack of appetite: Gan Jiang (Dried Ginger) and Sha Ren (Amomum) in appropriate amounts, grind into fine powder and mix. Take 6 g each time, twice a day, for 5 days as one treatment course. ⑤ For oral ulcers: Gan Jiang (Dried Ginger) 10 g, Huang Bai (Phellodendron) 15 g, Qing Dai (Indigo) 9 g, for one day’s dosage. Grind into very fine powder, apply externally to the oral mucosa, 2-3 times a day.
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