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Lu Gen (Reed Rhizome)

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Cold Lu Gen (Rhizoma Phragmitis Communis)
Sweet, Cold
Rhizoma Phragmitis Communis
Tone Marks:
lú gēn


  • Clears Heat and Promotes Fluids
    For high fever, irritability and thirst.
  • Clears Lung Heat
    Especially useful in acute stages with thick, yellow sputum.
  • Clears Stomach Heat
    For vomiting and belching.
  • Promotes Urination
    For dark and scanty urine (from heat), especially if symptoms include thirst and irritability.
  • Vents Rashes
    Encourages the expression of rashes during a febrile condition.

Contraindications and Cautions

  • Do not use in symptoms of cold from deficiency of the spleen and stomach.

Herb-Drug Interactions

  • This section is being researched, and is not completed.

Toxicity and Overdose

  • This section is being researched, and is not completed.


  • 15-30 grams, up to 60 grams if used alone for incomplete expression of rashes. Used fresh this herb has a stronger effect.
  • Part used: rhizome.

This Herb Appears in the Following Formulas: