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Ban Xia (Zhi)

製半夏

  • State/School

    California License Exam, Pacific College Comps

  • Alias

    Zhi Ban Xia

  • Pharm Name

    Pinelliae Rhizoma Preparatum

  • Common Name

    Pinellia Rhizome(processed)

  • Category

    Warm & Transform Cold-Phlegm

  • Ingredients

  • Taste

    Acrid, Toxic

  • Pao Zhi

    Ginger-prepared to reduce toxicity, alter its properties to dry & warm (instead of hot & acrid), boost its dry damp & transform phlegm actions, direct qi downward & alleviate nausea. This form of preparation is best for cough & rebellious qi due to cold-phlegm, or phlegm and thin-mucus due to Spleen deficiency.

  • Temperature

    Warm

  • Action / Indication

    1. Dries dampness, transforms phlegm, and causes rebellious qi to descend: for cough with copious sputum, as in cold-phlegm in the Lungs. Especially effective for transforming phlegm due to dampness of the Spleen. 
    1. Directs rebellious qi downward and stops vomiting: for nausea and vomiting due to many causes including cold, thin mucus, Stomach deficiency, Stomach heat, or pregnancy. 
    1. Dissipates nodules and reduces clumps: for nodules, pressure, distention, or pain due to phlegm lingering in the chest, phlegm nodules in the neck (such as goiter and scrofula), or obstruction caused by phlegm anywhere in the body. Also for focal distention in the chest and epigastrium.
  • Treatment Principles

    Dries Dampness
    Dissolves Phlegm
    Redirects Stomach Qi Downward
    Stops Nausea and Vomiting
    Shrinks Nodules
    Unblocks Phlegm Stagnation
    Heals the Skin

  • Contraindication

    Use extreme caution with all bleeding conditions, yin deficiency cough, hot phlegm, and fire conditions.  Incompatible with Wu Tou, Cao Wu, Chuan Wu, and Fu Zi. Allergies to this herb have been reported.

  • Dosages

    4.5-12g. Ban Xia is always sold processed (with ginger, vinegar or alumen) which removes its toxic properties.

  • Meridians

    LU, SP, ST

  • Tom's Comment

    1. Ban Xia is the premier herb to address phlegm. Its moderate temperature allows it to be used in Hot and Cold Phlegm.
    2. Ban Xia is commonly used for substantial as well as insubstantial phlegm.
    3. Ban Xias ability to descend Qi is a prominent secondary function. It is one of the major herbs used for vomiting.
    4. Last function of healing the skin is archaic. Modern day practitioners do not use it for such purposes.
    5. Ban Xia is the processed form of the herb. Sheng Ban Xia is extremely toxic and rarely used.
  • Source

  • Formula Type