Pinyin: Da Huang  Chinese: 大黄
Pharmaceutical: Radix et Rhizoma Rhei
Taxonomy: Rheum palmatum
English: Chinese Rhubarb Root

Tastes: Bitter, cold
Meridians Entered: Large Intestine, Spleen, Stomach, Liver and Heart

Actions & Indications:

1. Drains Heat and purges accumulations
   Intestinal Heat Excess, with high fever, profuse sweating, thirst, constipation, abdominal distention and pain, delirium, a yellow tongue coat and a full pulse
   Yang-Ming Fu Stage
   Qi Level Heat in the Intestines
2. Drains Fire
   Fire from Excess with intense fever, sore throat, and painful eyes and constipation
   Fire toxin sores due to Xue Level Heat, especially with constipation
3. Clears Heat, transforms Dampness and promotes urination
   Damp-Heat with oedema, jaundice, painful urinary dysfunction and acute, hot dysenteric disorders
4. Drains Heat from the Blood
   Bloody stool either from hemorrhoids or Heat in the Intestines
   Chaotic movement of hot Blood with hemoptysis or epistaxis with constipation
   It can be powdered and administered orally for bleeding in the upper digestive tract
5. Invigorates the Blood and dispels Blood Stasis
   Blood Stasis with amenorrhea, fixed abdominal masses or fixed pain
   Blood Stasis due to traumatic injury
   Intestinal abscess
6. Clears Heat and reduces Fire toxicity
   Topically or internally for burns or skin lesions (Chuang Yung) due to Heat
7. Clears Heat and eliminates Phlegm
   Chronic Accumulation of Phlegm-Heat with cough, dyspnea, mania, disorientation and other symptoms of Phlegm Misting the Heart

Standard Dosage: 10-15g in decoction. Excessive decoction will reduce the purgative action. Therefore it should be added at end to achieve this purpose and over-decocted to eliminate this action.
Cautions: It should be used with caution in case of spleen and stomach deficiency for its bitter and cold property which is easily to damage stomach qi. It is contraindicated to women during pregnancy, menstruation or lactation for it has actions of activating blood and resolving stasis, and can make the purged substances follow lactating out.

Pinyin: Hou Po  Chinese: 厚朴
Pharmaceutical: Cortex Magnoliae
Taxonomy: Magnolia officinalis
English: Magnolia Bark

Tastes: Bitter, pungent, warm
Meridians Entered: Spleen, Stomach, Lung and Large Intestine

Actions & Indications:

1. Promotes the movement of Qi in the Middle Jiao and resolves Stagnation
   Abdominal, epigastric, and/or chest fullness, bloating, loss of appetite, poor digestion, constipation
   Plum Pit Qi, a feeling of a lump in throat, usually considered psychosomatic today (globus hystericus). Hou Po has modern indications as neuroprotective and also features in formulas like Da/Xiao Cheng Qi Tang which deal with neuropsychiatric symptoms like delirium.
2. Promotes the movement of Qi downward, dries Dampness and transforms Phlegm
   Dampness or Phlegm Obstructing the Middle Jiao with distention, fullness, nausea and diarrhoea
3. Descends Rebellious Qi, reduces Phlegm and calms wheezing
   Cough and wheezing due to Phlegm congesting the Lungs
4. Expels Wind, scatters Cold and regulates the Blood
   The Shen Nong Ben Cao Jing places in the middle class of woods and says "It mainly treats Wind-stroke, Cold damage, headache, Cold and Heat, fright qi, blood Bi and dead muscles."
5. Removes the Three Worms
   The Shen Nong Ben Cao Jing also says that it "removes the Three Worms." These may refer to difficult to treat metabolic disorders caused by overindulgence and should be accompanied by fasting, meditation and exercise regimes.

Standard Dosage: 3-10g in decoction.
Cautions: It should be used with cautions for the syndrome of qi deficiency and fluid consumption, and in pregnant women. Due to some of the anticoagulant effects of its constituents it should be used with caution in conjunction with blood thinners.

Pinyin: Zhi Shi  Chinese: 枳实
Pharmaceutical: Fructus Aurantii Immaturus
Taxonomy: Citrus aurantium
English: Immature Seville Orange / Immature Bitter Orange / Immature Sour Orange

Tastes: Pungent, bitter, slightly cold
Meridians Entered: Spleen, Stomach and Large Intestine

Actions & Indications:

1. Breaks up Stagnant Qi, reduces accumulation, descends Qi, unblocks the bowels and removes Stagnant Food
   Qi Stagnation and accumulation with epigastric or abdominal pain and distention or indigestion with focal distention or gas
   Food Stagnation
2. Transforms Phlegm, reduces distention and resolves hardenings
   Turbid Phlegm Obstructing the Qi with focal distention and fullness in the chest and epigastrium
3. Expels Wind, alleviates itching, breaks up bindings, regenerates flesh and invigorates the Qi
   Listed in the Shen Nong Ben Cao Jing as a medium class wood which "treats great Wind within the skin giving rise to tormenting itching as if [caused by] flax seeds, eliminates cold and heat and heat binding, stops dysentery, promotes the growth of the muscles and flesh, disinhibits the five viscera, boosts the qi, and makes the body light."

Standard Dosage: 3-10g in decoction.
Cautions: It should be used with cautions for pregnant women.