Individual Herbs Notebook

Da Huang

Translation: Big Yellow

Pharmaceutical: Radix et Rhizoma Rhei
Taxonomy: Rheum palmatum

Other names: Chinese Rhubarb Root / Amlavetasa अम्लवेतस

Category: Downward Draining Herbs



Properties: Bitter, cold

Meridans Entered:
Primary: Large Intestine, Spleen, Stomach, Liver and Heart


Traditional 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

Suggested Daily 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.


Notable Constituents:
Appears in 120 formulae listed on this site: (click to display)
Research Links & References: (click to display)