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Yibian
 Shen Yaozi 
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formula nameCinnamon Twig Ephedra Half and Half Decoction
sourceTreatise on Cold Damage and Miscellaneous Diseases
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bubble_chart Preparation and Dosage

Cinnamon Twig (Ramulus Cinnamomi)
Ephedra (Herba Ephedrae)
Peony Root (Radix Paeoniae Alba)
Fresh Ginger Rhizome (Rhizoma Zingiberis)
Bitter Apricot Seed (Semen Armeniacae Amarum)
Liquorice Root (Radix Glycyrrhizae)
Chinese Date (Fructus Jujubae)

bubble_chart Efficacy

Harmonizing and releasing flesh, dispelling evil, and relieving itching.

bubble_chart Indications

Taiyang disease, after eight or nine days, presents with malaria-like symptoms, fever and chills, more heat and less cold, the person does not vomit, and the stool is normal. It occurs two to three times a day. Due to the inability to produce slight sweating, the body will itch. It is appropriate to treat with Cinnamon Twig Ephedra Half and Half Decoction.

bubble_chart Formula Principles

This formula is a combination of Cinnamon Twig Decoction and Ephedra Decoction. In the formula, Cinnamon Twig Decoction treats exterior deficiency, while Ephedra Decoction treats exterior excess. This formula, however, is used to treat conditions that are neither deficient nor excessive in the exterior. The symptoms of this formula resemble malaria but are not malaria, because malaria, whether it is daily malaria, alternate-day malaria, or quartan malaria, always occurs at regular intervals, and there is never a case where it occurs twice in one day or reaches grade III. In terms of the duration of the illness, if it has already lasted for eight or nine days, it is very likely that the disease has already transmitted to the shaoyang or yangming regions. However, the main symptom of shaoyang disease is "vomiting," and since it is stated that the person does not vomit, it should be understood that it is not shaoyang disease. Similarly, the main symptom of yangming disease is "constipation," and since it is stated that the stools are clear and the person feels comfortable, it should be understood that it is not yangming disease. It is only because of the misdiagnosis and mistreatment of taiyang disease that the original fever and chills pattern has now dissipated. However, the pathogenic factors still linger in the exterior and have not been resolved, so this formula must be used to treat it.

bubble_chart Pattern Identification

  1. fever and chills, more heat and less cold.
  2. The person does not vomit.
  3. Clear stools and a desire to defecate naturally.
  4. Itchy skin.

bubble_chart Modern Application

Common cold, bronchitis, skin itching, urticaria.

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