太阳病，头痛发热，身疼腰痛，骨节疼痛，恶风无汗而喘者，麻黄汤主之。

麻黄汤方

麻黄   三两，去节

桂枝   二两，去皮

甘草   一两，炙

杏仁   七十个，去皮尖

上四味，以水九升，先煮麻黄，减二升，去上沫，内诸药，煮取二升半，去滓，温服八合，覆取微似汗，不须啜粥，余如桂枝法将息。

Initial Yang syndrome: Decoction of Herba Ephedrae suits the syndrome with the following symptoms and signs---headache and fever, lumbago, arthralgia and general aching, asthma, and a fear of wind without perspiration.

Decoction of Herba Ephedrae

(Mahuang Tang):

Herba Ephedrae                           3 liang

Ramulus Cinnamomi                    2 liang

Radix Glycyrhizae Praeparata,       1 liang

Semen Armeniacae Amarum        70 pcs.

Stew Herba Ephedrae in nine sheng of water till seven sheng are left. Then put the rest of the drugs in the decoction and stewit till two and a half sheng remain. Filter the decoction and take eight ge as a dose. Cover the patient to induce light perspiration. There is no need to take porridge. The same care should be given to the patient as in the case of Decoction of Ramulus Cinnamomi.

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