Aidus & E-Fong Herbal Solution
Herbal Medicine for Removing Exterior Syndromes- Bai Zhi -白芷
                                      
                                              Bai Zhi (BZA022)
                                               (  Xiang Bai zhi )
                                         Dahurian Angelica Root
                                      Radix Angelicae Dahuricae

This herbal medication is the root of the perennial herbaceous plants Angelica dahurica Benth. and Hook. or A. anomala
Lallem. and A. taiwaniana Boiss. of family Um- belliferae, mainly cultivated in Zhejiang, Hubei, Liaoning, Sichuan and
other provinces of China. The herb is dug out in summer and autumn when the leaf turns yellow, cleared of hairy
rootlets, dried in the sun, thoroughly moistened, sliced and prevented from borers. The drug is called Xiang Bai zhi in
Chinese.

Properties: The herb is pungent in flavour, warm in nature and acts on the lung and stomach channels. Being pungent,
warm and aromatic for dispersion, the herb is good at dispersing pathogenic wind-cold from the lung channel, and
particularly good at removing pathogenic wind-dampness from the Yangming Channel to relieve pain effectively.
Therefore, it is an important herb to treat headache due to wind-cold, Yangming headache and headache with
rhinorrhea of turbid discharge.

Effects: Expelling wind, dispelling ex-pathogens, clearing passages, relieving pain, removing dampness, arresting
leukorrhea, eliminating swelling, and draining pus.
Indications:

1.  To treat exterior syndromes affected by pathogenic wind-cold, headache and nasal obstruction, it is often used in
combination with Fang Feng (ledebouriella root), Qiang Huo (notopterygium root) and other herbs, such as Jiuwei
Qianghuo Tang .

2. To treat Yangming headache belonging to wind-cold due to exterior pathogens with pain in the forehead as the main
symptom, the drug is often used in combination with Chuan Xiong(chuanxiong rhizome), Fang Feng (ledebouriella root)
and other herbs for expelling wind, dispersing cold and relieving pain.
3. To treat headache with rhinorrhea of turbid discharge, nasal obstruction and distending pain in the forehead, the herb
is used in combination with Chan er  (xanthiurn) and Xin Yi (magnolia flower), such as Cangerzi San .
In addition, it is often used to treat women's leukorrhagia, swelling pain of  sore and carbuncle, and other syndromes.
Dosage and Administration: 3~ 10g.

Modern Researches: Its decoction has certain inhibiting effects on Bacillus coli, Bacillus dysenteriae, typhoid bacillus,
Pseudomonas aeruginosa and Bacillus proteus.


                                                                                                                                                
                                    白芷《本经》

为伞形科多年生草本植物兴安白芷 Angelica dahurica Benth. et Hook. 或 )川白芷 A.anomala Lallem. 和杭白芷 A.
taiwaniana Boiss. 的根。主产于浙江、湖北、辽宁及四川等地 , 多系栽培。夏秋间叶黄时采挖 , 除去须根 , 晒干 ,
润透切片。防蛀。本品又名香白芷。

【药性说明】味辛 , 性温。归肺、胃经。本品辛温香散 , 善散肺经风寒之邪 , 尤其善除阳明经风湿之邪而止痛功良 ,
故为风寒头痛、阳明头痛、鼻渊头痛之要药。

【药物功效】祛风解表 , 通窍止痛 , 燥湿止带 , 消肿排脓。

【临床应用】

1.治风寒表证 , 头痛鼻塞 , 常配防风、羌活等药同用 , 如九味羌活汤。

2. 治阳明头痛属外感风寒 , 以前额痛为主症者 , 常配川芎、防风等祛风散寒止痛药同用。
3. 治鼻渊头痛 , 鼻流浊涕 , 鼻塞不通 , 头额胀痛 , 配苍耳子、辛夷同用 , 如苍耳子散。
此外 , 还常用治妇女白带过多及疮痛肿痛等证。

【 用量用法】 3~lO 克。

【现代研究】白芷水煎剂对大肠杆菌、痢疾杆菌、伤寒杆菌、绿脓杆菌、变形杆菌有一定的抑制作用