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Chinese Medicinal Material
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【Chinese Name】 |
小半夏湯
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【Phonetic】 |
Xiao Ban Xia Tang
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【English Name】 |
Minor Pinellia Decoction |
【Classification】 |
Qi-regulating formulas |
【Source】 |
《Essentials from the Golden Cabinet》Jin Gui Yao Lue《金匱要略》 |
【Combination】 |
Pinelliae Rhizoma (Ban Xia) 1 sheng (20g), Zingiberis Rhizoma Recens (Sheng Jiang) 0.5 jin (10g) |
【Method】 |
Prepare it as a decoction. |
【Action】 |
Dissolves phlegm, dissipates rheum, harmonizes the stomach, and directs counterflow downward. |
【Indication】 |
Xiao Ban Xia Tang is indicated for vomiting due to phlegm-rheum. The symptoms are vomiting phlegm-drool, lack of thirst, retching, hiccup, indigestion, and normal urination. The coating is white and glossy. |
【Pathogenesis】 |
This pattern is due to phlegm-rheum lodged below the heart and rising counterflow stomach qi. Phlegm-rheum stays in the stomach, the stomach qi cannot descend so it rises to cause vomiting. Vomiting damages body fluids and leads to thirst. Thirst indicates the pooled water is relieved after vomiting. However, in this situation, there is a lack of thirst after vomiting because the thoracic rheum still stays lodged below the heart. The treatment is to dissolve phlegm, dissipate rheum, harmonize the stomach, and direct counterflow downward. |
【Application】 |
1. Essential pattern differentiation Xiao Ban Xia Tang is a fundamental formula used to treat vomiting due to phlegm-rheum. This clinical pattern is marked by vomiting with fever and no thirst, white and glossy tongue coating. 2. Modern applications This formula may be used in the following biomedically defined disorders when the patient shows signs of vomiting due to phlegm-rheum: gastritis, gastrointestinal reaction due to inner ear disease, vertigo, and ill-effects from chemotherapy. 3. Cautions and contraindications This formula is warm and drying, so it is not applicable for patients suffering vomiting due to patterns of wind-heat or yin deficiency with internal heat. |
【Additonal formulae】 |
Da Ban Xia Tang (Major Pinellia Decoction 大半夏湯) [Source]《Essentials from the Golden Cabinet》Jin Gui Yao Lue《金匱要略》 [Ingredients] Ban xia 2 sheng (15g), ren shen 3 liang (9g), honey 1 sheng (9g) [Preparation and Administration] Mix honey with 1 dou and 2 sheng water and stir 240 times. Cook down to 2.5 sheng, take 1 sheng warm and leave the rest for later use. [Actions] Harmonizes the stomach and directs counterflow downward, boosts qi and moistens dryness. [Applicable Patterns] Vomiting due to phlegm-rheum caused by qi deficiency. Symptoms include: regurgitation, evening vomiting of food eaten in the morning, or morning vomiting of food eaten in the evening, retained undigested food, spasm after vomiting, fatigue, a pale complexion, weak limbs, dry stools the size of goat pellets. The tongue is light red with scanty coating, and the pulse is thready and weak. |
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