藿香 紫苏 白芷 大腹皮 茯苓（各三两） 白术 橘皮 桔梗 半夏曲 浓朴（姜汁炒各二两） 甘草（一两）
内伤外感，致成霍乱，憎寒壮热，急调其中而疏其表。白术、茯苓、甘草、半夏、浓朴、桔梗、大腹皮，调
中药也。中调足以正不正之气于内。藿香、白芷、橘皮、紫苏，疏表药也，表疏足以正不正之气于外。内外畅达，
邪逆潜消。霍乱，吐泻交作之谓。戴元礼曰∶肥人多中虚，以气盛于外而歉于内也，治之必先理气，此散是也。
吴绶曰∶若太
阳伤寒，头痛发热，骨节疼痛，此方全无着落。伤寒发热，脉沉而小，及夹阴伤寒，阴虚发热等，皆不可用。
诗曰∶藿香正气，橘术苓芷，桔朴甘苏，相霍为治，偌大腹皮，一盂病去。
半夏陈 橘皮陈 茯苓 甘草
一切痰饮为病，咳嗽胀满，呕吐恶心，头眩心悸，此方主之。
痰虽本乎水，成乎火，结乎气，相见乎湿，稠浊为痰为热，清稀为饮为寒，皆由脾惫，不能运化食物，腐气
留中，偏传经脉而成病。故在肺则咳，在胃则呕，在心则悸，在胁则胀，在背则冷。初起发热头痛，类外感表证；
久则潮热夜重，类阴火内伤；走注支节疼痛，又类风症。但肌色如故，脉滑不匀为异。是故痰以湿生，半夏之辛
热能燥湿，茯苓之甘淡能渗湿，湿去痰乃消。痰从气结，橘皮之辛温以利气，甘草之甘平以和气，气治疾徐瘥。
加生姜、黄连，曰加味二陈。治嘈杂不快，睑赤胜烂而痒。加当归、地黄、曰金水六君。治肺肾虚寒，水泛为痰。
诗曰∶二陈谓橘夏，苓草无妨新，金水六君内，归地亦云云。
Huo Xiang Zheng Qi San (Patchouli Powder to Rectify the Qi) consists of Huoxiang (Agastache Herba), Zisu (Perilla Folium), Baizhi (Angelicae Dahuricae Radix), Dafupi (Arecae Pericarpium), each at 1.5 kg; Baizhu (Atractylodis Macrocephalae Rhizoma), Jupi (Citri Reticulatae Pericarpium), Jiegeng (Platycodonis Radix), Banxia Qu (Pinelliae Tuber Praeparatum with Fermented Wheat), Nongpu (Magnoliae Officinalis Cortex, stir-fried with ginger juice), each at 1.0 kg; Gancao (Glycyrrhizae Radix et Rhizoma) at 0.5 kg.
When external pathogenic factors and internal injuries combine to cause Huoluan (Cholera-like syndrome characterized by vomiting and diarrhea), presenting with aversion to cold and high fever, it is necessary to urgently regulate the Middle Jiao (Middle Burner/Spleen-Stomach system) and disperse the exterior. Baizhu, Fuling, Gancao, Banxia, Nongpu, Jiegeng, and Dafupi are herbs that regulate the interior. Adequate regulation of the interior is sufficient to rectify the abnormal qi within. Huoxiang, Baizhi, Jupi, and Zisu are herbs that disperse the exterior. Adequate dispersion of the exterior is sufficient to rectify the abnormal qi outside. When both interior and exterior are unobstructed, the rebellious pathogens naturally dissipate. Huoluan refers to a condition where vomiting and diarrhea occur simultaneously. Dai Yuanli stated: "Obese individuals often suffer from deficiency in the center because their righteous qi is abundant on the exterior but deficient in the interior." Treatment must first focus on regulating qi; this formula exemplifies such an approach. Wu Shou stated: "If it is Taiyang Shanghan (Cold Damage affecting the Taiyang channel) presenting with headache, fever, and body ache, this formula is entirely inappropriate. For Shanghan with fever, a deep and small pulse, as well as Jia Yin Shanghan (Cold damage involving Kidney Yang deficiency) and Yin Xu Fa Re (Febrile disease due to Yin deficiency), this formula should not be used."
The poem states: Huoxiang Zhengqi [San], composed of Jupi, Baizhu, Fuling, Baizhi, Jiegeng, Nongpu, Gancao, Zisu, along with Dafupi; one bowl of this decoction will eliminate the illness.
Er Chen Tang (Two-Cured Decoction) consists of Banxia Chen (Pinelliae Tuber, aged), Jupi Chen (Citri Reticulatae Pericarpium, aged), Fuling (Poria), and Gancao (Glycyrrhizae Radix et Rhizoma).
This formula is the primary treatment for all diseases caused by Tan Yin (Phlegm-Fluid retention), including cough, abdominal distension and fullness, vomiting, nausea, dizziness, and palpitations.
Although Tan (Phlegm) originates from Water, forms through Fire, knots through Qi, and manifests through Dampness, thick and turbid substances constitute Tan associated with Heat, while clear and thin substances constitute Yin associated with Cold. All these arise from Spleen exhaustion, which fails to transform and transport food, causing foul qi to remain in the middle jiao and transmit to the meridians, resulting in disease. Thus, when in the Lung, it causes cough; in the Stomach, vomiting; in the Heart, palpitations; in the hypochondrium, distension; and in the back, coldness. Initially, fever and headache may appear, resembling exterior syndromes; over time, tidal fever worsening at night may occur, resembling internal injury from Yin fire; wandering pain in the joints may resemble Wind disorders. However, the skin color remains normal, and the pulse is slippery yet irregular, which distinguishes it. Therefore, Tan is generated by Dampness. The pungent and hot nature of Banxia can dry Dampness, and the sweet and bland nature of Fuling can leach out Dampness; once Dampness is removed, Tan dissipates. Tan forms from Qi stagnation. The pungent and warm nature of Jupi promotes Qi flow, and the sweet and neutral nature of Gancao harmonizes Qi; when Qi is regulated, the disease gradually resolves. Adding Shengjiang (Zingiberis Rhizoma Recens) and Huanglian (Coptidis Rhizoma) creates Jia Wei Er Chen Tang (Modified Two-Cured Decoction), used to treat epigastric discomfort, red and ulcerated eyelids with itching. Adding Danggui (Angelicae Sinensis Radix) and Dihuang (Rehmanniae Radix Preparata) creates Jin Shui Liu Jun Wan (Metal-Water Six-Gentlemen Pill), used to treat Lung and Kidney Deficient-Cold where water overflows to form Phlegm.
The poem states: Er Chen refers to Jupi and Banxia; Fuling and Gancao need not necessarily be aged. Inside Jin Shui Liu Jun, Danggui and Dihuang are also included.