麻黄（六两去节） 桂枝（二两） 甘草（二两炙） 杏仁（四十个去皮尖） 生姜（三两切） 大枣（十二枚擘）
石膏（如鸡子大碎）
上七味以水九升。先煮麻黄减二升。去上沫。纳诸药煮取三升去滓温服一升。取微似汗。汗出多者温粉粉之。一服
汗者停后服。汗多亡阳遂虚恶风烦躁不得眠也。
或问此方治脉浮紧头痛恶寒。身疼痛。不汗出而烦躁。并不见中风之脉论。而疏钞金钾。但据条首中风二字。乃云
本之风气。似隐标之寒化反显释风寒两感者。谬矣殊不知其实为风多寒少之证。设果本隐标显。则治病必求其本何反倍
用麻黄耶案内台方云。此一证。全在不汗出三字。藏机若风伤卫。则自汗恶风。寒伤营则无汗而喘。此云不汗出而烦躁
则知其证略。有微汗不能透出故生烦燥。于此可见其兼有风证而脉见浮紧是风见寒脉加以恶寒身疼。知寒重于风。故于
麻桂二汤中除去芍药。倍麻黄而加石膏设不并力图之。速令外泄则风挟寒威内攻。鼓动君相二火。则周身皆为火化矣所
以不得不倍用麻黄也。其去芍药而加石膏者。以其汗既不能透出原无藉于护营热既郁于心包则解烦诚不可缓明乎此则不
但大青龙之法可解。大青龙之方可施。其麻黄杏仁甘草石膏汤。越婢汤。桂枝二越脾一汤麻黄升麻等可随证取用而无窒
碍也。
麻黄（六两，去节） 桂枝（二两） 甘草（二两，炙） 杏仁（四十个，去皮尖） 生姜（三两，切） 大枣（十二枚，掰开）
石膏（如鸡蛋大小，捣碎）
以上七味药，用水九升。先煮麻黄，水量减少二升，去掉水面上的浮沫。加入其余药物，煮取三升，滤去药渣。温服一升。服药后以微微出汗为宜。如果汗出过多，用温粉扑身。第一次服药后若已出汗，则停止服用后面的药。若汗出过多导致亡阳（阳气随汗液大量流失而虚脱），会出现身体虚弱、怕风、烦躁、无法入睡等症状。
有人问：此方主治脉象浮紧、头痛、恶寒、身体疼痛、无汗且烦躁的症状。这里并没有出现中风病的典型脉象论述。但《疏钞金钥》仅依据条文开头的“中风”二字，便声称这是本为风气（风邪为主），看似隐伏的标证是寒化，反而显现出来，解释为风寒两感之证。这是错误的。殊不知这实际上是风多寒少的证候。如果真是本在风而标在寒，那么治病必须求其根本，为何反而加倍使用麻黄呢？《案内台方》说：这一证候的关键全在于“不汗出”这三个字。藏机认为：如果是风邪伤及卫分，则会有自汗、恶风；如果是寒邪伤及营分，则无汗而喘。此处说“不汗出而烦躁”，可知其证候略同于有微汗但不能透发，因此产生烦躁。从这里可以看出它兼有风证，而脉象见浮紧，这是风邪表现出寒邪的脉象，加上恶寒、身疼，可知寒重于风。所以在麻黄汤和桂枝汤中除去芍药，加倍麻黄并加入石膏。如果不合力图速效，迅速让邪气外泄，那么风邪挟带寒威向内攻伐，鼓动君火（心火）和相火（命门之火），则周身都会化为火热之证了。所以不得不加倍使用麻黄。之所以去掉芍药而加入石膏，是因为汗既不能透出，原本就不需要依靠芍药来护养营阴；热邪已经郁结在心包，解除烦躁确实刻不容缓。明白了这一点，不仅大青龙汤的法度可以理解，大青龙汤的方剂也可以施用。其中的麻黄杏仁甘草石膏汤、越婢汤、桂枝二越婢一汤、麻黄升麻汤等，都可以随证选用而没有阻碍。
Ephedrae Herba (Mahuang, 麻黄) [6 liang, nodes removed], Cinnamomi Ramulus (Guizhi, 桂枝) [2 liang], Glycyrrhizae Radix et Rhizoma (Gancao, 甘草) [2 liang, honey-fried], Armeniacae Semen Amarum (Xingren, 杏仁) [40 seeds, skin and tips removed], Zingiberis Rhizoma Recens (Shengjiang, 生姜) [3 liang, sliced], Jujubae Fructus (Dazao, 大枣) [12 pieces, split open],
Gypsum Fibrosum (Shigao, 石膏) [size of a chicken egg, crushed].
The above seven ingredients are boiled in nine sheng of water. First, boil Ephedrae Herba until the volume reduces by two sheng, then remove the foam floating on the surface. Add the remaining herbs and boil to obtain three sheng of decoction. Strain the residue. Take one sheng warm. The goal is to induce a slight sweat. If sweating is excessive, apply warm powder to the body. If sweating occurs after the first dose, discontinue subsequent doses. Excessive sweating may lead to Wang Yang (collapse of Yang Qi), resulting in deficiency, aversion to wind, irritability, and insomnia.
One might ask: This formula treats conditions with a floating-tight pulse, headache, aversion to cold, body pain, absence of sweating, and irritability. There is no mention of the typical pulse for Wind Strike (Zhong Feng). However, *Shuchao Jin Yao* relies solely on the word "Wind Strike" at the beginning of the clause, claiming that the root is Wind Qi, while the apparent branch manifestation is Cold transformation, interpreting it as simultaneous contraction of Wind and Cold. This is erroneous. In fact, this is a syndrome where Wind is predominant and Cold is minor. If the root were truly Wind and the branch Cold, treatment must address the root; why double the dosage of Ephedrae Herba? *Annei Taifang* states: The key to this syndrome lies entirely in the phrase "absence of sweating." Cangji notes: If Wind injures the Wei (Defensive) level, there will be spontaneous sweating and aversion to wind; if Cold injures the Ying (Nutritive) level, there will be absence of sweating and wheezing. Here, "absence of sweating with irritability" indicates that although there may be slight sweating, it cannot penetrate out, thus generating irritability. This shows the presence of concurrent Wind syndrome, while the floating-tight pulse indicates Wind manifesting as a Cold pulse. Combined with aversion to cold and body pain, it is known that Cold is heavier than Wind. Therefore, within the formulas Mahuang Tang and Guizhi Tang, Paeoniae Radix Alba (Shaoyao, 白芍) is removed, Ephedrae Herba is doubled, and Gypsum Fibrosum is added. If one does not strive for speed to expel the pathogen externally, the Wind will carry the force of Cold to attack internally, stirring up the Ministerial Fire (Xiang Huo) and Sovereign Fire (Jun Huo), causing the entire body to transform into Fire. Hence, it is necessary to double the use of Ephedrae Herba. Paeoniae Radix Alba is removed because, since sweat cannot penetrate out, there is no need to rely on it to protect the Ying level; the Heat is already constrained in the Pericardium (Xin Bao), so relieving irritability is urgent. Understanding this, not only can the principle of Da Qing Long Tang be comprehended, but its prescription can also be applied. Formulas such as Mahuang Xingren Gancao Shigao Tang, Yuebi Tang, Guizhi Er Yuebi Yi Tang, and Mahuang Shengma Tang can be selected according to the syndrome without obstruction.