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Shi Wei (Pyrrosia Leaves)

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Slightly Cold Shi Wei (Herba Pyrrosiae)
Bitter, Sweet, Slightly Cold
Herba Pyrrosiae
Tone Marks:
shí wĕi
Stone Reed


  • Clears Damp-Heat, Promotes Urination, Reduces Edema
    For burning, painful urination with or without stones, blood or dribbling due to damp-heat. Also for reducing edema.
  • Stops Bleeding
    For trauma, hematemesis, epistaxis, hypermenorrhea, and bloody urine.
  • Stops Cough, Expels Phlegm, and Clears the Lungs
    For cough and wheezing due to Lung heat with phlegm

Contraindications and Cautions

  • None Noted

Herb-Drug Interactions

  • None Noted

Toxicity and Overdose

  • None Noted


  • 5-10 grams and 15-30 grams in severe cases in decoction 12
  • 6-9 grams in decoction 13


  • This herb goes to the Lungs and Bladder allowing it to clear damp and heat from the upper and lower parts of the body.

Clinical Studies and Research

  • Chemical constituents of Pyrrosia petiolosa.
    Yang C, Shi JG, Mo SY, Yang YC. - J Asian Nat Prod Res. 2003 Jun;5(2):143-50.
  • Zhao YH. Related Articles, Analysis of the therapeutic effect of 1,148 cases of bacillary dysentery treated with Pyrrosia sheareri.
    Zhong Xi Yi Jie He Za Zhi. 1985 Sep;5(9):530-3, 514. Chinese.
  • Zheng M. Related Articles, Experimental study of 472 herbs with antiviral action against the herpes simplex virus.
    Zhong Xi Yi Jie He Za Zhi. 1990 Jan;10(1):39-41, 6. Chinese.
  • When Shi Wei was combined in an herbal formula it reduced sputum in 56% of cases with chronic tracheitis.
    Shang Hai Ren Min Chu Ban She, 1973.