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du zhong 杜 仲

by: Joe Hing Kwok Chu

杜 仲 

 

Pharmaceutical name:Cortex Eucommiae Ulmoidis
Biological name:

學名﹕

Eucommia ulmoide Oliv.

Parabarium spp. and Euonymus spp. are also used as substitutes for this  herb

Pron. in Japanese:tochu
Pron. in Korean:tuch'unmg
Pron. in Cantonese:to chung
Common Name:eucommia bark
Distribution: 
Properties (characteristics)性味﹕sweet, slightly acrid, and warm 甘,溫。
Channels (meridians) entered:

歸經﹕

liver and kidney channels

入肝、腎經。

Actions & Indications:

功用﹕

 

 

 

 

Tonic for liver and kidney; strengthening  muscles and bones; and stabilizing pregnancy.補肝腎,強筋骨,安胎。

1. use in liver and kidney deficiency: chronic pain in lower back and knees, lack of strength, dizziness, impotence, irregular menses and frequent urination.1:用於肝腎不足,腰膝疼痛,乏力,眩暈,陽痿,月經不調﹐小便頻數等症。

2. use in weakness during pregnancy, unstable pregnancy, chronic pain in lower back and excessive movements of fetus.
2:用於孕婦體虛,胎元不固,腰痠、胎動。
 

Medical Function:1. effect on circulatory system

2.  effect on immume system

3. anti inflammatory effect

4. sedative and anesthesia effect

5.  effect on stress

6. effect on uterus

7.  diuretic  effect

8.  anti-aging effect

 

Chemical ingredients:1. (1)[(+) -pinoresinol O-Beta-D-glucopyranoside], [+ - pinoresinol di-O-Beta-D-glucopyranoside] [1], (pinoresinol di-beta-D-glucoside) [2], [+) -1-hydroxypinoresinol 4', 4" - di-O-Beta-D-glucopyranoside][3,8],[(+)-1-hydroxypinoresinol 4'-O-Beta-D-glucopyranoside][4], [(+)-1-hydroxypinoresinol 4"-O-Beta-D-glucopyranoside][4,8],[(+)-epipinoresinol][9].

(2)  [liriodendrin, (+) -syringaresinol-di-O-Beta-D-glucopyranoside][1], [(+)-syringa resinol  O-Beta-D-glucopyranoside][3], (syringylglycerol-Beta-syringaresinol ether 4", 4'"-di-O-Beta-Dglucopyranoside0[6,8], [(+)-syringaresinol monoglucoside][9], (syringin)[7].

(3) [- -olivil 4', 4"-di-O-Beta-D-glucopyranoside][3], [(-) -olivil], [(+)-cyclo-olivil][4], [(-) -olivil 4'-O-Beta-D-glucopyranoside], [(-) -olivil 4"-O-Beta-D-glucopyranoside][5], [(-) -olivil 4', 4"-di-O-Beta-D-glucopyranoside][8].

(4)Medioresinol (+) -Medioresinol di-O-Beta-D-glucopyranoside [1,8], Eucommin A[(+) -medioresinol 4'-O-Beta-D-glucopyranoside][3.8], (+) -Medioresinol monoglucoside [9], Hedyotol C 4", 4'"-di-O-Beta-D-glucopyranoside (guaiacylglycerrol-Beta-medioresinol ether 4", 4'" di-O-Beta-D-glucopyranoside)[5, 8].

(5) (cpmoferom)[7], (dehydrodiconife4ryl alcohol-4, gamma'-di-O0betta-D-glucopyranoside[6,8]

erytho-dihydroxydehydrodiconiferyl alcohol, threo-dihydroydehydrodiconiferyl alcohol.

2. eucommiol [10,11], eucommioside [11], eucommioside-I [8,12]

 

Dosage:

用量﹕

12  to 15 g in decoction.

三錢至五錢,煎服。
 

Samples of formulae:Du Huo Ji Sheng Tang, Tian Ma Gou Teng Yin
Modern Usage:1. for rheumatoid arthritis

2.  for sciatica

3. for hypertension

 

Cautions:

禁忌﹕

Not suitable for  patients with yinxu (yin deficiency) and  with heat.

陰虛火旺者不宜。
 

 

 

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