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中藥詞典    Chinese Herb Dictionary      

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da huang   大黃      (in English and Chinese 中英文)

Translated and Compiled by: Joe Hing Kwok Chu

Present Day Application:

For serious injuries, losing large amount of blood, infection, shock, sudden stoppage of heart or respiration, intoxication, hypoxemia , Multiple Organ Dysfunction Syndrome (MODS), Multi-organ Failure (MOF).

It can help preventing: the inflammation of the stomach and intestine paralysis, liver cell injury in acute hepatitis, and acute lung injury.

If the above illnesses have already occurred, it can provide a different degree of therapeutic effect.


 See picture of herb here. See picture of plant.


嚴重創傷﹐大失血﹐感染﹐休克﹐心跳呼吸骤停﹐中毒﹐低氧血症﹐MODS和多臟器功能衰竭(MOF)等多種危重病患者,在未出現急性胃粘膜病變和腸麻痹﹐急性肝細胞損傷﹐急性肺損傷之前應用,有 预防其發生的作用,對已出现上述臨床併發症者則有不同程度的治療作用。  按此看大黄飲片圖。 按此看植物圖

Pharmaceutical name:


Radix et Rhizoma Rhei

Biological name:


  1.   Rheum palmatum Linn (zhang ye da huang 掌葉大黃)

  2.   Rheum tanguticum Maxim. et Baill. (tang gu te da huang 唐古特大黄)

  3.  Rheum officinale Baill. (yao yong da huang 药用大黄)

Pron. in Japanese:



Pron. in Korean:



Pron. in Cantonese:


daai6 wong4

Other Names:

別名 ﹕

jiang jun 將軍,  chuan jun﹐川軍﹐jing wen 錦紋 , chuan da huan 川大黃,

 zhi jun (prepared da huang) 制軍(制大黄)

Common Name:

Chinese rhubarb root and rhizome



 Rheum palmatum LINN (掌葉大黃):  Sichuan, Gansu, Qinghai, Xikang

 and other provinces.

 Tang Gu Te da huang: Sichuan, Gansu, Qinghai, and other provinces.

 Medical da huang:  Hupei, Sichuan, Guizhou, Yunnan and other provinces.


掌 葉 大 黃 分 布 四 川 ﹐ 甘 肅 ﹐ 青 海 ﹐ 西 康

等 省 。

 唐 古 特 大 黃 分 布 四 川 ﹐ 甘 肅 ﹐ 青 海 等 地 。

 藥 用 大 黃 分 布 湖 北 ﹐ 四 川 ﹐ 貴 州 ﹐ 雲 南

等 地 。

Properties (characteristics)


bitter, cold


Channels (meridians) entered:


heart, large intestine, liver, stomach


Actions & Indications:主治:

  • lack of bowel movement

  • dysentery

  • blood clots

  • tumor

  • red and painful eyes

  • abdominal distention and/or pain

  • blood in stool

  • hemorrhoidal bleeding

  • urination burning sensation

  • nose bleeding

  • coughing up blood

  • sore extremities

  • edema

  • jaundice

  • lesions

  • burns and scalding (external application)

  • absence of menses

  • Note: Cooking for more than 10 minutes will reduce its purgative effect.

    For purgative effect use raw da huang. For blood invigorating action

    use wine or vinegar treated da huang. To stop bleeding use charred

    da huang.

    • 宿 食 停 滯 ,

    • 實 熱 便 秘 ,

    • 痢 疾 ,

    • 瘀 血 ,

    • 癥 瘕 ,

    • 暴 眼 赤 痛 ,

    • 腹部脹滿﹐

    • 水 腫 ,

    • 黃 疸 ,

    • 小 使 淋 瀝 ,

    • 瘡 癤 癰 毒 。

    註:煎煮多過10分鐘能 减少瀉下作用。作瀉剤需用生大黄 。

    增加血液循環需用醋或酒大 黄。

    Medical Function:


    Induces diarrhea: Oral administration of water or an alcohol extract created

    diarrhea in white lab mice. Its water extract did not affect the carbon powder

    movement  in the small intestine, but could promote the expelling of the carbon powder It did not affect the amount of water in the small intestine but

    increased the water in the large intestine. Using the extract for muscle or

    vein injection did not induce diarrhea. The laxative effect of da huang has

    nothing to do with the blood flow but is a direct effect in the large intestine,

    causing the large intestine's motility, and an increase in the amount of moisture generated, thus causing the purgative effect.

    Lowers BUN (blood urea nitrogen) in the blood.

    Anti bacteria

    Anti virus: water extract possesses anti virus effect; anti HBV [1]


    瀉 下 作 用: 本 品 水 或 醇 抽 取 物, 對 於 小 白 鼠 經 口 給藥 有 瀉 下 作 用 。 其 水 抽 取 物 不 影 響 小 腸 內 炭 末 輸

    送 作 用 ,但 能 促 進 炭 末 排 泄 作 用 , 不 影 響 小 腸 內

    水 分 量 ,能 增 加 大 腸 內 水 分 量 。 抽 取 物 以 肌 肉 或

    靜 脈 內 注 射 給 藥 時,則 不 發 生 瀉 下 作 用 。 本 品 瀉 下

    作用 與 血 行 無 關 , 乃 直 接 作 用 於 大 腸 , 引 起 大腸 運 動

    亢 進 ,水 分 量 增 加 而 產 生 瀉 下 作 用 。  降 低 血 中 尿 素

    氮 作 用 本 品 鼠 李 沒 食 子貳 ( rhatannin ) 成 分 以 腹 腔 給 藥 注 射

    於 家 兔 ,可 降 低 血 中 尿 素 氮 (BUN) 作 用 。

    其 抗 菌 活 性 成 分 為 大 黃 酸 (rhein) ﹐ 大 黃 素 (emodin) ,而 遊 離 型 之 蔥 衍 生 物 之 抗 菌 性 較 弱 。

    水 抽 取 物  有 抗  病 毒 作 用; 抗 HBV。[1]

    Chemical ingredients:化學成份﹕

    Chemical ingredients:

    學 成 份﹕













    2-O-Cinnamoyl - l,6-di-O-galloyl-β -D-glucoside






    3~12 g.

    3∼12 克。看大黃用量之討論

    Samples of formulae:

    Modern Research:

    da huang can inhibit Coxsackie virus B3

    Researchers at the medical school of Wuhan University of China announced  that researchers Zhan-Qiu Yang et al of their Virus Research Unit verified that although da huang cannot directly kill CVB3 but can induce the cells of CVB3 to shrink, peel off, and break; thus it can stop CVB3 to multiply.



    not suitable for patients with pixu (spleen deficient) condition. Long term usage is not recommended. Constipation may follow after sudden dropping of usage of da huang after long period of time.



    [1] J Viral Hepat. 2013; 20(7): 445-452.


    Identifying authentic da huang from counterfeit:


    Authentic medicinal plants of the herb da huang are: dried roots and rhizomes of Rheum palmatum L., Rheum tanguticum Maxim. ex Balf. or Rheum officinale Baill. Their physical identifying characteristics are: rhizome diameter is about 3 ~ 10cm. The medulla portions of new cross-sections are broad, with design of star points ringing out or scattered.

    1.Take the product powder 0.2 g, add 2 ml of warm methanol.

     2. Soak for 10 minutes, let cool.

     3. Take  the10 μl of supernatant  and drop a dot on filter paper. Drop a drop of 45% ethanol on it.

     4.Remove the paper, let it dry and stand for 10 minutes.

     5. Review under UV light (365nm), should not show significant lasting bright purple fluorescent. (check Rumex II).


    The following excerpt written by Shen Bao-An (沈保安) on identifying counterfeit da huang

    1. Rheum franzenbachii Munt  Its medicinal root diameter is about 1 ~ 5cm; cross-section without star points and shows purple fluorescence in the UV lamp.

    2. Rheum hotaoense C. Y. Cheng et C. T. Kao. Its medicinal root diameter is about 1.5 ~ 4cm; without star points of the new cross-section and shows purple fluorescence in the UV lamp.

    3.  Rheum emodi Wall. Its medicinal root diameter is about 1 ~ 5cm; new cross-section in the sunlight shows significant blue-gray, and shows violet fluorescence in the ultraviolet lamp was.

    4. Rheum wittrochii Lundstr.  Its medicinal root diameter is about 2.5 ~ 4cm; without star points of the new cross-section and shows purple fluorescence in the UV lamp.


    Sponsors' Ads by Google 以下為谷歌所提供贊助者之廣告


    以下取材自沈保安 編著的﹕

    安徽省常见中药材混亂品种的 鉴別﹐(安徽省 芜湖市药品檢 験所)

      正品藥材為蓼科植物掌葉大黃 Rheum palmatum L.﹐唐古特大黃 Rheum tanguticum Maxim. ex Balf.或藥用大黃 Rheum officinale Baill.的干燥根及根莖。其藥材鑒別特征:根莖直徑3∼10cm。新橫斷面髓部寬廣,有星點環列或散在。取本品的粉末 0.2g,加甲醇2ml,溫浸 10分鐘,放冷,取上清液10μl,點於濾紙上,以45%乙醇展開,取出,晾干,放置10分鐘,置紫外光燈(365nm)下檢視,不得顯持久的亮紫色熒光(檢查土大黃貳)。


    1. 華北大黃 Rheum franzenbachii Munt.。其藥材根莖直徑1∼5cm;新橫斷面無星點,在紫外光燈下顯紫色熒光。

    2. 河套大黃 Rheum hotaoense C. Y. Cheng et C. T. Kao。其藥材根莖直徑1.5∼4cm;新橫斷面無星點,在紫外光燈下顯紫色熒光。

    3. 藏邊大黃 Rheum emodi Wall.。其藥材根莖直徑1∼5cm;新橫斷面在日光下顯藍灰色,在紫外光燈下顯紫色熒光。

    4. 天山大黃 Rheum wittrochii Lundstr.。其藥材根莖直徑2.5∼4cm;新橫斷面無星點,在紫外光燈下顯紫色熒光。

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