Individual Herbs Notebook

Long Dan Cao

Pharmaceutical: Radix Gentianae
Taxonomy: Gentiana scabra

Other names: Chinese Gentian Root

Category: Herbs that Clear Heat



Properties: Bitter and cold

Meridans Entered:
Primary: Liver, Gallbladder, Stomach and Bladder
Divergent Channels: Gallbladder, Liver
Extraordinary Vessels: Dai


Traditional Actions/Indications:
  1. Drains Damp-Heat from the Liver and Gallbladder channels
    Damp-Heat in the upper portion of the Gall Bladder Channel with red, swollen sore throat and eyes; swollen, painful ears or sudden deafness
    Damp-Heat in the Liver/Gallbladder with jaundice, pain, swelling or dampness in the genital area or foul-smelling vaginal discharge and itching
  2. Drains and pacifies Excess Liver Fire
    Liver Fire Blazing Upward with headache or red eyes
    Liver Wind-Heat with fever, spasms, convulsions or flank pain
  3. Settles the Five Zang and Kills Gu Toxins
    Stated in the Shen Nong Ben Cao Jing but not commonly used this way today
  4. Aids fasting
    Mentioned in the Shen Nong Ben Cao Jing as part of the superior class of herbs which can, with protracted taking, sharpen the wits, improve memory, make the body light and slow ageing. This may suggest it was part of supplementing the diet when engaging in an "avoiding grain" (Bigu 辟穀) fasting regime to cultivate life (Yangsheng 養生).

Suggested Daily Dosage: 2-6g in decoction.


Cautions: It is contraindicated for deficiency cold syndrome.


Appears in 10 formulae listed on this site: (click to display)
Research Links & References: (click to display)