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Daqinglong Tang


Major Green Dragon Decoction

  1. 大青龙汤
  2. 大青龍湯

The Prescription of Daqinglong Tang


The book Shang Han Lun



Ma Huang: The principal drug, being pungent and bitter in flavor and warm in nature, expelling wind-cold pathogens.

Gui Zhi: Expelling the pathogenic factors from the muscles and skin, aiding Ma Huang in inducing diaphoresis.

Shi Gao: Being pungent in flavor and cold in nature, clearing away the interior heat and assisting Ma Huang in expelling exogenous pathogenic factors.

Xing Ren: Moistening the lung to arrest cough.

Sheng Jiang and Da Zao: Promoting diaphoresis, reinforcing Qi of the rmddle-Jiao.

Gan Cao: Regulating the stomach, tempering the actions of all the other ingredients.

The Effect of Daqinglong Tang


Relieving exterior syndrome by means of diaphoresis, clearing away heat and restlessness.


Exterior excess syndrome due to wind-cold pathogens and pathogenic heat in the interior, marked by severe chills, high fever, general pain, restlessness without sweat and floating tense pulse; including such diseases with the above symptoms as bad cold, acute bronchitis, bronchopneumonia, lobar pneumonia, etc.


Decocted in water for oral dose to be taken 3 times.


The administration of this prescription should be ceased once the case would begin to sweat, as its effects in inducing diaphoresis are extremely strong. And it must not be used in treating cases with exterior syndrome of deficiency type marked by spontaneous perspiration.