da qing ye

Name: da qing ye
Creator: Bencao Index

大青叶·Folium Isatidis

Isatis Leaf

About da qing ye

Da Qing Ye (大青叶) is the leaf of woad, recorded as Folium Isatidis. It is bitter and salty in flavour and cold in temperature, entering the Heart, Lung and Stomach channels. The catalogue files it among the herbs that clear Heat and relieve toxicity.

Names

Pinyin	da qing ye
Chinese	大青叶·大青葉
Latin Name	Folium Isatidis
English Name	Isatis Leaf·Isatis Leaf:Woad Leaf·woad root
Japanese	taiseiyo
Korean	daecheongyeop

Classification

Category: Clear Heat, Relieve Toxicity
Channels: Lung, Stomach, Heart
Flavour: Bitter, Salty
Temperature: Cold
Part used: Leaf
Family: Brassicaceae
Species: Isatis Indigotica
Tags: Chinese Herbs, Common

Actions and indications

Clears Heat and resolves Fire toxicity

Warm febrile disease: high fever with thirst and irritability, and a scarlet tongue
Pneumonia
Severe epidemic Fire toxin that affects everyone, whatever their constitution
Fire toxin (Chuang Yung) anywhere in the body, above all in the Lungs and throat, including a sore, swollen throat
Throat Bi and ulcers in the mouth
Skin eruptions from Heat toxin, erysipelas-like redness and swellings, applied topically

Cools the Blood and dissipates maculae

Dark purple or crimson blotches and rashes from intense Blood Heat, its particular strength
Very high fever with irritability and altered consciousness
Gallbladder Heat
Vomiting of blood

Clears Heat toxin from the head and upper body

Mumps
Sores of the mouth and tongue
Red, swollen eyes

Combinations

jin yin hua
Sore throat, mumps, erysipelas or sores from toxic Heat
jin yin hua + jing jie + niu bang zi
External Wind-Heat with fever, irritability, thirst and sore throat; early-stage febrile disorders
shi gao + xuan shen + sheng di huang
Heat toxin in warm pathogen disease with Fire blazing at the Qi, Ying and Blood levels together, with high fever, maculae and at times clouded consciousness
she gan
Heat causing any kind of throat swelling and pain, including acute tonsillitis and diphtheria
she gan + shan dou gen
Heat causing any kind of throat swelling and pain, including acute tonsillitis and diphtheria, with a stronger effect
dan shen
Cholecystitis and hepatitis, with or without jaundice
dan shen + yu jin + long dan cao
Cholecystitis and hepatitis, with or without jaundice, with a stronger effect
dan shen + tao ren + hong hua + bie jia
Sub costal mass.
sheng ma + xuan shen + jin yin hua
Severe mouth ulcers; throat Bi
shui niu jiao + zhi zi
Blood Heat with maculae, nosebleed and bleeding gums
yin chen hao + da huang
Jaundice.
huang qin + ban lan gen
Parotitis.
zhi mu + shi gao + zhi zi
Heat in the Blood.

Dosage

Age	Raw	Granule	Tincture	Concentrate	Frequency
Any 9-30g; In decoction 60 gm. if fresh; Tincture: 2-5ml	9-30 g	—	2-5 ml	—	—

Cautions

contraindication Cold from Spleen and Stomach deficiency: this very cold herb can bring on loose stools, poor appetite, and cold and fullness in the abdomen
contraindication No true Heat pattern, including chronic, deficient or Cold presentations
caution Not for prolonged use; it is traditionally given in short courses for acute illness
pregnancy Pregnancy: use only under a qualified practitioner, because the herb is so cold
paediatric Children: use only under a qualified practitioner, because the herb is so cold

Interactions

Drug interactions

Allergy to sulfonylureas (tolbutamide, glipizide, glyburide) or to sulfonamides (sulfadiazine, sulfisoxazole, sulfamethoxazole, trimethoprim with sulfamethoxazole, erythromycin with sulfisoxazole): a reaction to this herb is also possible

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