Isatis or Woad Root Powder / Ban Lan Gen / Isatis Indigotica

• Can be used to make tea, capsules, and liquid extracts

This herb is commonly known as Indigo Root and Woad Root. The Botanical name is Isatis Indigotica root and Ban Lan Gen is the Pin Yin name. Isatis Root has been used for centuries in Traditional Chinese Medicine as an herb that Clears Heat. It drains heat, reduces fire toxicity, cools the blood, and benefits the throat. It enters the Heart, Lung, and Stomach channels. It may be helpful in reducing some kinds of toxicity. This herb may improve a wide variety of symptoms. Consult with your health care professional for guidance. Do not use if pregnant or nursing.

【品種來源】

本品為十字花科植物菘藍的根；或爵床科植物馬藍的根莖及根。秋季採挖，除去泥沙，曬乾。

【性味歸經】

苦，寒。歸心、胃經。

【功效】

清熱解毒，涼血利咽。

【主治】

主要用於溫熱病發熱、頭痛、喉痛，或溫毒發斑、痄腮、痛腫瘡毒、丹毒、大頭瘟疫等多種熱毒熾盛之證。本品有類似于大青葉的清熱解毒涼血之功，而更以解毒利咽散結見長。加用於外感風熱發熱頭痛或溫病初起有上述證候者，常與金銀花、連翹、荊芥等同用；治大頭瘟疫，頭面紅腫、咽喉不利等證，常配伍玄參、連翹、牛蒡子等，如普濟消毒飲。

【用法用量】

煎服10～15g。

【注意禁忌】

脾胃虛寒者忌用。