1. TCM Wiki
  2. Radix Knoxiae

Radix Knoxiae

Hong Da Ji
1 #


Hong Da Ji (Knoxia Root)

  1. Hong Da Ji
  2. 红大戟
  3. Knoxia Root
  4. 紅大戟

The Effect of Radix Knoxiae


Bitter, cold, slightly toxic; lung, spleen and kidney meridians entered.


Counteract toxic pathogen, drive out accumulated water, resolve swelling and dissipate nodulation.


Scrofula, sores and boils, difficulty in urination and defecation, subcutaneous nodule, thoracic and abdominal effusion.

Dosage and Administrations

Decoct 1.5~3 g or take the powder, 0.3~1 g, or made into pill or powder, or soaked in wine. Proper dosage is for external application, pounded for applying or decocted for washing.


It is contraindicated to the weak and pregnant women.