治一切阳虚气弱，脾衰肺损，面色枯白，饮食少思，四肢无力，体瘦面黄，皮聚
毛落，脉来细软。
人参 白术（土炒） 茯苓（各二钱） 甘草（一钱，炙） 姜枣水煎服。
脾者，万物之母也。肺者，气之母也。脾胃一虚，肺气先绝，脾不健运，故饮食减
少，则营卫无所滋养，脾主肌肉，故体瘦面黄，肺主皮毛，故皮聚毛落，脾肺皆虚，故
脉来细软也。是方以人参补五脏之元气，白术补五脏之母气，茯苓致五脏之清气，甘草
调五脏之乖气，四药皆甘温，甘得中之味，温得中之气，犹之不偏不倚之君子也。展布
德泽，以行春之令，《经》曰∶气主煦之。
治一切血虚，日哺发热。
当归（酒炒） 生地黄（各三钱） 白芍药（二钱） 川芎（一钱五分） 水煎服。
《经》曰∶血主濡之。四物皆濡润之品，故为血分主药。地黄甘寒，入心、肾，以沃
血之源；当归辛温，入心、脾，而主壮血摄血之本；芍药酸寒，入肝家，而敛疏泄之血
海；川芎阴中之阳，可上可下，通足三阴而行血中之气。然吴氏曰∶失血太多者，禁勿
与之四物皆阴，阴者天地闭塞之令，非所以生万物者也。
治气血俱虚，恶寒发热，烦操作渴，大便不实，饮食不进，小腹胀痛，弦晕昏愦等
证。
人参 白术 茯苓 甘草 当归 川芎 地黄 白芍 姜枣水煎服。
气为卫属阳，营为血属阴，此人身中之两仪也。纯用四物，则独阴不长，纯用四君
子，则孤阳不生，二方合用，则气血有调和
之益，而阴阳无偏胜之虞矣。《经》曰∶气血正平长有天命。
治疗一切阳气虚弱、气力不足，脾脏衰败、肺脏受损，面色枯槁苍白，食欲减退，四肢无力，身体消瘦且面色发黄，皮肤干枯聚拢、毛发脱落，脉象细弱柔软的病症。
人参 白术（土炒） 茯苓（各二钱） 甘草（一钱，炙烤） 用生姜和大枣的水煎煮后服用。
脾脏，是万物生长的根本；肺脏，是气的根本。脾胃一旦虚弱，肺气首先衰竭；脾脏不能正常运化，所以饮食减少，导致营气（营养之气）和卫气（防御之气）没有滋养来源；脾脏主管肌肉，所以身体消瘦、面色发黄；肺脏主管皮毛，所以皮肤干枯聚拢、毛发脱落；脾肺都虚弱，所以脉象细弱柔软。这个方子用人参补益五脏的元气，用白术补益五脏的根本之气，用茯苓引导五脏的清气，用甘草调和五脏的乖戾之气，这四味药都是甘温性质的，甘味属于中和的味道，温性属于中和的气性，就像不偏不倚的君子一样。施展恩泽，以施行春季生发的命令，《黄帝内经》说：“气主要起到温煦的作用。”
治疗一切血虚，在下午申时左右发热。
当归（酒炒） 生地黄（各三钱） 白芍药（二钱） 川芎（一钱五分） 用水煎煮后服用。
《黄帝内经》说：“血主要起到濡润的作用。”四物汤的药物都是濡润性质的，所以作为血分的主药。地黄味甘性寒，入心经和肾经，以滋润血的源头；当归味辛性温，入心经和脾经，而主要强壮摄血的本源；芍药味酸性寒，入肝经，而收敛疏泄的血海；川芎是阴中之阳，可上可下，通行足部三条阴经并运行血中的气。然而吴氏说：失血过多的人，禁止使用四物汤，因为四物汤都是阴性的药物，阴性代表天地闭塞的命令，不是用来生长万物的。
治疗气血俱虚，怕冷发热，烦躁口渴，大便不成形，饮食不进，小腹胀痛，眩晕昏沉等症状。
人参 白术 茯苓 甘草 当归 川芎 地黄 白芍 用生姜和大枣的水煎煮后服用。
气属于卫气，属阳；营气属于血，属阴，这是人身中的阴阳两仪。如果纯用四物汤，则独阴无法生长；如果纯用四君子汤，则孤阳无法生成，两个方子合用，则有调和气血的好处，而阴阳没有偏胜的忧虑了。《黄帝内经》说：“气血平和，才能长寿。”
Treats all conditions of Yang deficiency and Qi weakness, Spleen decline and Lung damage, withered and pale complexion, poor appetite, weakness in the four limbs, emaciation with yellowish face, dry and gathered skin with falling hair, and a fine and soft pulse.
Ren Shen (Ginseng Radix), Bai Zhu (Atractylodis Rhizoma, stir-fried with soil), Fu Ling (Poria, each 2 qian), Gan Cao (Licorice Root, 1 qian, honey-roasted). Decoct with water using Sheng Jiang (Fresh Ginger) and Da Zao (Jujube) as adjuvants, and take orally.
The Spleen is the mother of all things. The Lung is the mother of Qi. When the Spleen and Stomach are deficient, Lung Qi fails first. If the Spleen fails to transport and transform, dietary intake decreases, leaving Ying Qi (Nutritive Qi) and Wei Qi (Defensive Qi) without nourishment. The Spleen governs muscles, hence emaciation and yellowish face; the Lung governs skin and hair, hence dry, gathered skin and falling hair. Since both Spleen and Lung are deficient, the pulse appears fine and soft. This formula uses Ren Shen to tonify the Yuan Qi (Original Qi) of the five Zang organs, Bai Zhu to tonify the Mother Qi of the five Zang organs, Fu Ling to guide the Clear Qi of the five Zang organs, and Gan Cao to harmonize the discordant Qi of the five Zang organs. All four herbs are sweet and warm; sweetness belongs to the flavor of centrality, and warmth belongs to the nature of centrality, resembling a Junzi (Noble Person) who is unbiased. They spread virtue and grace, executing the command of Spring. As stated in the *Classic*: "Qi primarily provides warmth."
Treats all conditions of Blood deficiency with afternoon fever (occurring around Shen hour, 3-5 PM).
Dang Gui (Angelicae Sinensis Radix, wine-fried), Sheng Di Huang (Rehmanniae Radix, each 3 qian), Bai Shao Yao (Paeoniae Radix Alba, 2 qian), Chuan Xiong (Ligustici Chuanxiong Rhizoma, 1.5 qian). Decoct with water and take orally.
As stated in the *Classic*: "Blood primarily provides moistening." The four ingredients of Si Wu Tang are all moistening substances, thus serving as the principal medicine for the Blood aspect. Di Huang is sweet and cold, entering the Heart and Kidney meridians to irrigate the source of Blood; Dang Gui is acrid and warm, entering the Heart and Spleen meridians to strengthen the root of generating and controlling Blood; Shao Yao is sour and cold, entering the Liver organ to astringe the Sea of Blood which is prone to dispersal; Chuan Xiong is Yang within Yin, capable of moving upward and downward, unblocking the three Yin meridians of the foot and circulating Qi within the Blood. However, Mr. Wu states: For those with excessive blood loss, Si Wu Tang is contraindicated because all four ingredients are Yin in nature. Yin represents the command of closure between Heaven and Earth, which is not suitable for generating all things.
Treats symptoms of combined Qi and Blood deficiency, aversion to cold and fever, irritability with thirst, loose stools, inability to eat, lower abdominal distension and pain, dizziness, vertigo, and faintness.
Ren Shen, Bai Zhu, Fu Ling, Gan Cao, Dang Gui, Chuan Xiong, Di Huang, Bai Shao Yao. Decoct with water using Sheng Jiang and Da Zao as adjuvants, and take orally.
Qi belongs to Wei Qi and is Yang; Ying Qi belongs to Blood and is Yin. These are the two Yi (polarities) within the human body. Using only Si Wu Tang results in solitary Yin failing to grow; using only Si Jun Zi Tang results in solitary Yang failing to generate. Combining these two formulas brings the benefit of harmonizing Qi and Blood, avoiding the risk of Yin or Yang dominance. As stated in the *Classic*: "When Qi and Blood are balanced, one may enjoy a long life."