Traditional Chinese Medicine Healing Herbs(TCMHH)

Wind-Damp-Dispelling, tendons-Soothing and Collaterals-Activating Herbs

Japanese Yam (Ningpo Yam Rhizome)

Ningpo Yam Rhizome 穿山龙 Chuan Shan Long
By the TCMHH editorial team Not medically reviewed How we work Updated 6 Oct 2026
Japanese Yam (Ningpo Yam Rhizome)
Japanese Yam (Ningpo Yam Rhizome)
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Chuan Shan Long

Name

Chuan Shan Long (Rhizoma Dioscoreae Nipponicae)

The Effect of Chuan Shan Long

Property

Bitter, neutral; liver and lung meridians entered.

Actions

Dispel wind-damp, clear lung, induce diuresis and eliminate phlegm.

Indications

Rheumatalgia, bronchitis, sudden sprain in the lumbar region, traumatic injury.

Dosage and Administrations

Decoct 6~9 g or 30~45 g of the fresh product, or soaked in wine. Proper dosage is for external application, pounded it for applying with fresh product.

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Sources and further reading

We cite classical materia medica and modern reference works. This article is health education, not medical advice.

  • Shennong Bencao Jing (The Divine Farmer's Materia Medica), Han dynasty.
  • Bencao Gangmu (Compendium of Materia Medica), Li Shizhen, 1578.
  • Chinese Pharmacopoeia, current edition — identity, quality and safety monographs.
  • NCCIH and WHO reference material on traditional medicine safety.

Spotted an error or a better source? Tell us — corrections are logged on our editorial policy page.

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