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mao gen 茅根

bai mao gen 白茅根

By: Joe Hing Kwok Chu


Pharmaceutical name:

英 文 藥 名 ﹕

Rhizonma imperatae cylindricae

Biological name:

拉 丁 名 ﹕

Imperata cylindrica (L.) P. Beauv.var. major (Nees) c. E. Hubb.

Agropyrum repens P. Beauv. (ou mao gen 歐 茅 根 )

Pron. in Japanese:

日 語 發 音 ﹕


Pron. in Korean:

韓 語 發 音 ﹕

mogun, pakmogun

Pron. in Cantonese:

粵 語 發 音 ﹕

maau4 gan1; baak6 maau4 gan1

Common Name:

英 文 名 ﹕

imperata, rhizome of wooly grass


分 佈 ﹕

throughout china and Southeast Asia

全 中 國 與 東 南 亞 。

Properties (characteristics)﹕

性 味 ﹕

sweet, cold

甘 ﹐ 寒 。

Channels (meridians) entered:

歸 經 ﹕

lung, stomach, small intestine, bladder

肺 ﹐ 胃 ﹐ 小 腸 ﹐ 膀 胱 。

Actions & Indications:

主 治 ﹕

cools the blood and stops bleeding; quells heat and promotes urination, clears heat from stomach and lungs

涼 血 ﹐ 止 血 ﹐ 退 燒  ﹐ 利 尿 ﹐ 清 肺 熱 ﹐ 清 胃 熱 。

Medical Function:

藥 理 ﹕

(1). stops bleeding (2). anti bacteria and anti virus. (3). promotes urination, especially during 5~10 days while taking the herb. It can be due to the potassium salt in the herb.

Chemical ingredients:

化 學 成 份 ﹕

glucose 6.8%; cane sugar, fructose, and starch 21%, potassium salt, oxalic acid, carotene, vitamins, and anemonin.


用 量 ﹕

9 to 24 g. Using by itself, up to 60 g.

Samples of formulae:

處 方 舉 例 ﹕

For hemorrhagic fever:

Formula 1:  bai mao gen, da huang , mang xiao, zhi shi  tao ren , sheng di huang , mai dong ,  mu tong  

Fornula 2:  bai mao gen 150 g, dan shen 20 g, lu gen 30 g, huang bai 10 g, pei lan 15 g, dan pi 10 g. Adjust the formula according to the syndrome.

出 血 性 熱 病 :

  1. 處 方 一 ﹕ 白 茅 根 , 大黃 , , 枳 實   桃仁,  生地黃,  麥 冬 ,   木 通

  2. 處 方 二 ﹕ 白 茅 根 150 g,  丹 參   20 g, 蘆根 30 g, 黃 柏  10 g, 佩蘭 15 g,  丹皮 10 g.


For Cancer of the digestive track:

bai mao gen 10 g, bai hua she she cao白花蛇舌草  12 g, ban zhi lian半枝蓮 10 g. Boil with water. Use as tea.

For periodontitis: click here for formula.

Modern Research:

to be uploaded



Not to use in cases of pixu (spleen deficient) or shenyangxu (kidney yang deficient) conditions.

Use care if blood pressure is low because of its diuretic effect.

腎陽虛脾虛 症狀者忌用。


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Last update: Jan 6, 2009; 11:38 a.m. LAH