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Yibian
 Shen Yaozi 
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formula nameEvodia Decoction
sourceShanghan Zabing Lun
smart_toy
bubble_chart Preparation and Dosage

Evodia Fruit (Fructus Evodiae) 9gm
Ginseng (Radix Ginseng) 9gm
Fresh Ginger Rhizome (Rhizoma Zingiberis) 20gm
Chinese Date (Fructus Jujubae) 4 pieces

bubble_chart Efficacy

Warming the middle tonifying deficiency, downbearing counterflow to stop vomiting.

bubble_chart Indications

  1. stomach yang deficiency pattern. Desire to vomit after eating, fullness and oppression in the chest and diaphragm, acid regurgitation or epigastric pain.
  2. Jueyin headache, retching, vomiting of frothy saliva.
  3. Shaoyin vomiting and diarrhea, reversal cold of hands and feet, severe dysphoria.

bubble_chart Formula Principles

This formula is designed for warming the middle and descending counterflow, and can treat diseases of the Yangming, Shaoyin, and Jueyin meridians. Its common main symptoms include vomiting and liver deficiency-cold of the spleen. It can be appropriately applied to those with counterflow vomiting. In the formula, Evodia Fruit has a pungent taste and hot nature, entering the liver, spleen, and kidney meridians. It can warm the stomach, descend counterflow, stop vomiting, soothe the liver to relieve pain, and tonify the kidney to stop diarrhea. This single herb treats three meridians simultaneously and serves as the main medicinal. Ginseng powerfully tonifies primordial qi and also nourishes yin, acting as the assistant medicinal. Fresh Ginger Rhizome is pungent and dispersing, warming the stomach and descending counterflow to stop vomiting, enhancing the main medicinal's effect of descending counterflow to stop vomiting and dispersing cold. It serves as the assistant medicinal in the formula. Chinese Date acts as the guiding medicinal, sweet and moderating to harmonize the middle. It moderates the pungent warm dryness of Evodia Fruit and Fresh Ginger Rhizome, while also assisting Ginseng in tonifying deficiency and supporting upright qi. When these medicinals are combined, they collectively achieve the effects of warming the middle, tonifying deficiency, eliminating yin, and supporting yang, thereby calming counterflow qi, stopping vomiting, and curing all symptoms.

bubble_chart Pattern Identification

  1. Vomiting with frothy saliva.
  2. Pale tongue with white, slippery coating.
  3. Deep and slow pulse.

bubble_chart Formula Modification

  1. vomiting or vomiting of pregnancy: add Villous Amomum Fruit, Pinellia, Poria.
  2. Severe cold or cold abdominal colic pain: add Aconite Lateral Root, Dried Ginger, Clove.
  3. Severe headache: add Sichuan Lovage Rhizome, Chinese Angelica, Chastetree Fruit.
  4. Abdominal pain: combine with Peony Root Liquorice Root Decoction.
  5. Vertigo headache vomiting: combine with Five Ingredients with Poria Powder.

bubble_chart Cautions and Contraindications

Those with stomach heat stagnation, vomiting, and acid regurgitation should avoid use.

bubble_chart Modern Application

This formula enhances immunity, inhibits bacteria, reduces inflammation, and alleviates pain. It is used for chronic gastritis, digestive ulcers, headaches, migraines, vomiting, morning sickness, acute vomiting and diarrhea, gastric atony, and excessive stomach acid.

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