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Dryness-Moistening Yīn-Boosting Decoction

润燥益阴汤 〔潤燥益陰湯〕 rùn zào yì yīn tāng

Source: Empirical formula

Ingredients

Actions: Clears the lung and dispels phlegm; moistens the lung and relieves cough; nourishes the liver and kidney.

Indications: Lung dryness cough with heat effusion or postmeridian tidal heat effusion, inhibited cough up of phlegm (which may be streaked with blood), heart vexation, and dry mouth. Tongue: Red with scant fur. Pulse: Fine and rapid. Also liver-kidney yīn vacuity characterized by dizzy head and vision, insomnia, profuse dreaming, limp aching lumbus and knees, tinnitus, frequent urination, vexation and thirst. Tongue fur: Scant. Pulse: Fine.

Method: Decoct with water.

Rationale: Adenophora clears the lung and dispels phlegm. Glehnia moistens the lung and engenders liquid. These two are the sovereigns. Tiān dōng and Bǎi bù, which moisten the lung and relieve cough, are the minister agents. Shēng dì huáng, Zhī mǔ, and Gǒu qǐ zǐ, which enrich the kidney and nourish the liver, are the assistants. Gān cǎo, which harmonizes all the agents of the formula, is the courier.

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