Long Dan Cao (Gentianae Radix)

Long Dan Cao (龍膽草), the root of Gentiana, drains damp-heat from the Liver and Gall Bladder and the lower burner, and drains ascendant Liver fire; one of the most bitter and cold herbs.

Lóng Dǎn Cǎo  ·  龍膽草

Latin / Pharmaceutical Name

Gentiana scabra (Radix Gentianae)

Common English Name

Chinese gentian root

Taste

Bitter

Temperature

Cold

Channels Entered

Liver, Gall Bladder

Actions & Functions

  • Drains damp-heat from the Liver and Gall Bladder and the lower burner
  • Drains ascendant Liver fire

Indications

Liver and Gall Bladder damp-heat with jaundice, foul vaginal discharge, genital itching and swelling, and damp-heat of the ear; and Liver fire with headache, red eyes, deafness and irritability.

Dosage

3-6 g in decoction.

Common Combinations

Chief herb of Long Dan Xie Gan Tang for Liver and Gall Bladder damp-heat and fire.

Cautions & Contraindications

Extremely cold and bitter; avoid in Spleen-Stomach deficiency and where there is no damp-heat or Liver fire.

About Attilio

Doctor of Chinese medicine, acupuncture expert and author of My Fertility Guide and My Pregnancy Guide.

Check Also

PubMed research

Acupuncture Identified as a Key Neuromuscular Intervention for Post-Stroke Swallowing Difficulties

Research summary (Acupuncture): Neuromuscular-related interventions for post-stroke dysphagia: a comprehensive narrative review. - Frontiers in neuroscience, 2026.