Pharmaceutical Latin: Folium Isatidis
Common English: Indigo
Woad Leaf
Folium Isatidis
Isatidis Leaf

Herbs that Clean Heat and Purge Fire: Herbs that Clear Heat and Detoxify; Target Warm and Heat Diseases

Taste Temperature Entering Meridians Dosage
(Slightly Pungent)
Very Cold
(Large Intestine)
In decoction 60 gm. if fresh
Tincture: 2-5ml
Actions Indications/Syndromes

Clears Heat and resolves Fire toxicity

Warm febrile disease, pneumonia

Epidemic outbreaks of Fire toxin that affects people regardless of their constitutions (severe contagious diseases)

Fire toxins anywhere in the body (Chuang Yung), especially the Lungs and throat

Often used for mouth ulcers and throat Bi

Cools the Blood and dissipates maculae

Maculae or other skin eruptions due to Blood Heat

Gallbladder Heat

Often used in cases with intense fever, irritability and changes in consciousness


  • Contraindicated for those with Spleen and Stomach Deficiency Cold.
  • Contraindicated for those with no Heat.
  • Patients who are allergic to sulfonylureas such as: tolbutamide (Orinase), glipizide (Glucotrol) and glyburide (DiaBeta/Micronase) and sulfonamides such as: sulfadiazine, sulfisoxazole, sulfamethoxazole, trimethoprim/sulfamethoxazole (Bactrim/Septra), and erythromycin/sulfisoxazole (Pediazole) may also be allergic to Da Qing Ye.

Flos Lonicerae
Jin Yin Hua


Flos Lonicerae
Jin Yin Hua

Hb. Schizonepetae
Jing Jie
Fr. Arctii
Niu Bang Zi

Shi Gao
Rx. Scrophulariae
Xuan Shen
Rx. Rehmanniae
Sheng Di Huang

Toxic Heat sores, erysipelas, mumps, or sore throat.

Exterior Wind-Heat with fever, thirst, irritability and sore throat or early-stage febrile disorders.

Heat toxin in Warm pathogen diseases leading to Blazing Fire in both Qi, Ying and Blood Levels with a high fever, maculae sometimes impaired consciousness.

Rz. Belamcandae
She Gan

Rz. Belamcandae
She Gan
Rx. Sophorae
Shan Dou Gen

Rx. Salviae Miltiorrhizae
Dan Shen

All types of pain and swelling of the throat, including diphtheria and acute tonsillitis due to Heat.

All types of pain and swelling of the throat, including diphtheria and acute tonsillitis due to Heat with a stronger effect.

Icteric and anicteric hepatitis and cholecystitis.

Rx. Salviae Miltiorrhizae
Dan Shen
Tub Curcumae
Yu Jin
Rx. Gentianae
Long Dan Cao

Rx. Salviae Miltiorrhizae
Dan Shen
Sm. Persicae
Tao Ren
Flos Carthami
Hong Hua
Carapax Trionycis
Bie Jia

Rz. Cimicifugae
Sheng Ma
Rx. Scrophulariae
Xuan Shen

(Flos Lonicerae)
(Jin Yin Hua)

Icteric and anicteric hepatitis and cholecystitis with a stronger effect.

Sub costal mass.

Throat Bi.

Severe oral ulcers.

Cornu Bubali
Shui Niu Jiao
Fr. Gardeniae
Zhi Zi

Hb. Artemisiae Scopariae
Yin Chen Hao
Rx. et Rz. Rhei
Da Huang

Rx. Scutellariae
Huang Qin
Rx. Isatidis
Ban Lan Gen

Maculae, epistaxis, and bleeding gums due to Heat in the Blood.



Rz. Anemarrhenae
Zhi Mu
Gypsum Fibrosum
Shi Gao
Fr. Gardeniae
Zhi Zi



Heat in the Blood.



  1. Natural Indigo made from the prepared leaves is called Qing Dai.
  2. It is most frequently used for reducing maculation in acute infectious disease.
  3. It is usually used as powders or pills.
  4. Indigo is the source of indirubin used in the treatment of cancer. Research shows that it is very effective with minimal side effects in the treatment of chronic myelocytic leukemia.
  5. It is slightly toxic and is often used externally in the treatment of skin diseases.
  6. It is used for clearing Heart, Lung and Stomach Heat Toxin, while mobilizing both Qi and Blood Levels.
  7. It can be used for inflammation of the brain membrane (encephalitis) due to Heat and inflammation of the spinal fluid.
  8. It can be used both internally and externally.
  9. It can be effective for Heat in the Gallbladder.
  10. It eliminates sores associated with childhood nutritional impairment and from poisoned weapons.
  11. Da Qing Ye, Indigo Naturalis Qing Dai, and Rx. Isatidis Bei Ban Lan Gen all originate from the same plants, cool Heat in the Blood, and reduce skin blotches. Qing Dai is best for toxic sores due to Fire and Heat, rashes from Warm toxins, hemoptysis and hematemesis and childhood convulsions. Dan Qing Ye and Bei Ban Lan Gen both cool Heat toxin in the Heart and Stomach, but Da Qing Ye is usually used for rashes from Warm toxin, while Bei Ban Lan Gen is used for massive head febrile disorders and throat obstruction due to mumps.