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Da Ji (Japanese Thistle, Cirsium)

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Cool Da Ji (Herba Cirsii Japonici)
Sweet, Cool
Herba Cirsii Japonici
Tone Marks:
dài jì
Alt Names:
Jing Da Ji
Big Thistle


  • Cools Blood and Stops Bleeding
    For epistaxis, hemoptysis, hematuria, metorrhagia, and blood in the stools with signs of heat.
  • Reduces Swelling, Disperses Blood Stagnation and Generates Flesh
    For abscesses, carbuncles, sores and swellings due to toxicity and blood stagnation
  • Treats Jaundice
    For jaundice due to Liver and Gallbladder damp-heat
  • Treats Hypertension
    For lowering blood pressure with signs of Liver heat or fire

Contraindications and Cautions

  • Do not use in cases with cold and deficiency of the Spleen and Stomach
  • Use with caution during pregnancy

Herb-Drug Interactions

  • Use with caution in patients taking warfarin or other blood thinners to avoid blood clots, but no adverse effect has been documented.

Toxicity and Overdose

  • Nausea and vomiting is a possible effect of ingestion of this herb


  • 10–15 grams in decoction with a maximum of 30 grams dried or 60 grams fresh 12
  • 9–15 grams in decoction 13


  • Charred Da Ji is better at stopping bleeding while the fresh herb is better for cooling the blood and reducing swelling.
  • The root of Da Ji is better for lowering blood pressure.
  • The fresh juice of this herb can be used alone for epistaxis, hematemesis, and excess menses.

Clinical Studies and Research

This Herb Appears in the Following Formulas:

This herb is incompatible with: