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Hu Zhang

Polygonum Cuspidatum/Knotweed Rhizoma | 虎杖
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SKU H0910

Ingredient: Polygoni cuspidati Rrhizoma (hu zhang).

Mandarin: 虎杖
Pin-Yin: Hu Zhang
English: Knotweed Rhizoma
Romaji: Kojo
Kanji: 虎杖
Kampo: No



Pharmaceutical Name:

  • Polygoni cuspidati Rhizoma


  • Chinese Herbal Medicine Materia Medica (Bensky et al.)


  • Bitter, cold

Channels Entered:

  • Liver, gallbladder, lung

Herb Actions:

  • Invigorates the blood and unblocks the channels
  • Clears heat, resolves dampness, and transforms phlegm
  • Resolves toxicity
  • Drains heat downward


  • Not recommended for those during pregnancy
  • Not recommended to be used alone for those with deficiency. Use together with other tonifying herbs.


Commonly Found In:

  • None found

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