da qing ye  大青葉

by: Joe Hing Kwok Chu

The roots are called ban lan gen. The leaves are called da qing ye

Pharmaceutical name:	Radix Isatidis seu Baphicacanthi, Isatidis Radix
Latin botanical name:	Baphicacanthus cusia (Nees) Brem. Isatis tinctoria L. Isatis indigotica Fort.
Pron. in Japanese:	banrankon
Pron. in Korean:	p'alamguri
Pron. in Cantonese:	pan lan kan
Common Name:	woad root
Other Names: 別名﹕	ban lan 板藍, da ding 大靛, shan lan 山藍， tu long gen 土龍根， da lan gen 大蘭根， lan long gen  蘭龍根.
Distribution:
Properties (characteristics)	bitter, cold
Channels (meridians) entered:	heart, lung, stomach
Actions & Indications:	For 1. rose-colored skin rash caused by diseases such as measles, syphilis, or scarlet fever and toxic heat, 2. skin eruption due to wind-heat, other skin and external diseases, 3. excessive thirst, 4. nose bleeding and vomiting of blood. 5. see modern applications
Medical Function:	1. anti micro organism, 2. anti cancer, 3. effect on immune system, 4. anti inflammation, and antipyretic 5. effect on heart and blood vessel 6. liver protection 7. effect on smooth muscle
Chemical ingredients:	The leaves contain tryptophan , isatan B, glucobrassicin, glucobrassicin-1-sulfonate, indigotin, 1-thiocyano-2-hydroxy-3-butene, adenosine, tryptanthrin, β-sitosterol, gama-sitosterol, palmitic acid, sucrose, evaporating oil etc.
Dosage:	15 to 30 g
Samples of formulae:	Acute hepatitis with jaundice: ban lan gen 30 g, zhi zi root 45 g. Make into concoction. Total patients: 53. Result: all healed. Duration of therapy: 10 to 50 days [7]
Cautions:	Not to use in absence of fire toxin or in weak patients. There are report of prolong usage can cause internal bleeding and injury to blood producing function.  There are reports that injectiones have caused allergic reactions and blood in urine. Allergic reactions included: dizziness, rash, purple lips and face,  numbness in the limbs and in serious condition, shock. Large dosage or prolong use can be toxic to the kidneys.

Last update: Mar 10, 2004; 10:50 p.m. LA

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