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Yibian
 Shen Yaozi 
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formulaMinor Purgative Decoction
sourceTreatise on Cold Damage and Miscellaneous Diseases
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bubble_chart Preparation and Dosage

Rhubarb Rhizoma (Radix et Rhizoma Rhei) washed with wine 12gm (4 liǎng)
Magnolia Bark (Cortex Magnoliae Officinalis) peeled, roasted 6gm (2 liǎng)
Immature Orange Fruit (Fructus Aurantii Immaturus) roasted 9gm (3 pieces for the larger one)

Take three herbs, boil them in 800 milliliters (four liters) of water until reduced to 400 milliliters (one liter and two deciliters). Strain the decoction and divide it into two doses to be taken warm. After the first dose, bowel movement should occur; if not, consume the remaining dose. If bowel movement occurs after the first dose, do not take the second dose.

bubble_chart Efficacy

Mild purgation heat accumulation, relieving fullness and eliminating stuffiness.

bubble_chart Indications

  1. Yangming fu-organ pattern, severe constipation, delirious speech tidal fever, chest and abdominal stuffiness and fullness, old yellow tongue coating, slippery and rapid pulse.
  2. Dysentery initial stage [first stage], diarrhea abdominal pain, tenesmus, can also be used.

bubble_chart Formula Principles

This formula is the Major Purgative Decoction minus Mirabilite, with a milder purgative effect to avoid harming the true yin of the lower energizer. It is primarily used to treat mild cases of yangming heat accumulation characterized by stuffiness, fullness, and excess. In the formula, Rhubarb Rhizoma clears heat and promotes bowel movements, purging the stomach and intestines; Magnolia Bark and Immature Orange Fruit regulate qi and resolve stuffiness, eliminating fullness and removing stagnation caused by waste accumulation, while also assisting Rhubarb Rhizoma in expelling food retention and accelerating the elimination of heat accumulation.

bubble_chart Pattern Identification

  1. yangming fu-organ pattern.
  2. Chest and abdominal stuffiness and fullness.
  3. Tongue coating old yellow.
  4. Pulse slippery and rapid.
  5. Dysentery initial stage [first stage] tenesmus.

bubble_chart Formula Modification

  1. Severe heat and stuffiness: add Coptis Rhizome, Skullcap Root.
  2. Food accumulation and pain: add Atractylodes Rhizome, Dried Tangerine Peel.
  3. Blood-deficiency fever: add Chinese Angelica, Unprocessed Rehmannia Root.
  4. Exterior heat and dryness with thirst: combine with Coptis Detoxification Decoction and add Gypsum.
  5. Blood deficiency with vexing heat: combine with Four Ingredients Decoction and add Chinese Wolfberry Root-bark.

bubble_chart Cautions and Contraindications

Contraindicated for constipation due to deficiency of body fluids or difficulty in defecation caused by weak peristalsis due to qi deficiency.

bubble_chart Modern Application

Acute febrile illness, intestinal obstruction, cholecystitis, hepatitis, constipation, hypertension, obesity, food poisoning, epilepsy, schizophrenia, retained food, dysentery, urinary retention, coronary heart disease, pneumoconiosis complicated by pulmonary infection, acute and chronic gastritis, acute bronchitis, and acute and chronic cholecystitis.

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