Source 出处 · Jingui Yaolüe · Doses are not given here: they are set by a licensed practitioner for the individual.
Safety. The indication is six short phrases, and two of them are negative findings: 不渴, no thirst, and 无大热, no high fever. A classical text that states what is not present is doing something useful, and a reader who skips those two clauses has read a different formula from the one that was written. The positive items are 恶风, aversion to wind; 一身悉肿, oedema of the whole body; 脉浮, a floating pulse; and 续自汗出, sweating that keeps going by itself - the word 续 is doing real work, because it describes spontaneous sweating that continues rather than one episode after an exertion.
One symptom, 一身悉肿, carries most of the modern weight. Generalized oedema is not a diagnosis; it is a short differential with a physical examination that takes minutes. Heart failure - with breathlessness, orthopnoea, raised jugular venous pressure and a history of hypertension or infarction. Nephrotic syndrome - periorbital swelling worst in the morning, frothy urine, and protein on a dipstick that costs very little to look for. Cirrhosis with hypoalbuminaemia - ascites, jaundice, spider naevi and a history that usually makes itself known. Protein-losing enteropathy, malnutrition, venous insufficiency, lymphoedema, thyroid disease in both directions, pregnancy, and drugs: calcium channel blockers, NSAIDs, corticosteroids, thiazolidinediones, gabapentinoids and oestrogens among them. Two of those are worth stating because they are missed for opposite reasons. Oedema with breathlessness is heart failure until it is excluded. Oedema beginning in a child within a week or two of a sore throat or an impetigo lesion is post-streptococcal glomerulonephritis until it is excluded: it is checked with a blood pressure, a urine dipstick, ASO and complement C3, and it is one of the few items on this list where the delay itself does harm.
The composition is the second point of interest, and it is the reason this formula keeps being discussed. 麻黄, a warm acrid herb whose active amines are sympathomimetic, is placed in the same pot as 石膏, a cold mineral. The classical pairing is deliberate and much argued over. What matters for a modern reader is that ephedra alkaloids raise blood pressure and heart rate, cause insomnia and urinary retention, interact with monoamine oxidase inhibitors, with stimulants, and with medicines for hypertension, and appear on prohibited lists in sport. A person with hypertension, coronary disease, arrhythmia, glaucoma, prostatic hypertrophy or thyroid disease is not a candidate for an ephedra-containing formula, and that statement does not depend on any opinion about the formula's efficacy. Gypsum (石膏) is hydrated calcium sulphate; it is not 滑石, talc, and it is not lime, and confusing those three is a real purchasing error. Licorice carries the glycyrrhizin problem - a mineralocorticoid-type pattern of sodium and water retention with potassium loss - and it is worst alongside potassium-losing diuretics, digoxin or anthraquinone laxatives; here it sits in the same formula as ephedra. Fresh ginger is a concentrated spice material and jujube is a concentrated sugar load.
The classical text excluded fever. That exclusion is the part to keep: if oedema appears together with fever, the differential has changed, and it now includes sepsis, infective endocarditis, cellulitis, and acute nephritis. There are no adequate safety data for this formula in pregnancy or breastfeeding, and pregnancy is an absolute exclusion. Chinese clinical reports on 越婢汤 exist, largely in nephrology and oedema contexts, small in scale and limited in method; this library records that the research exists, not that benefit has been established.
主治是六个短语，其中两条是阴性发现：不渴、无大热。一部古典文献写下「什么不存在」，是在做一件有用的事；跳过这两句的读者，读到的是另一首方。阳性条目是：恶风、一身悉肿、脉浮、续自汗出 —— 「续」字在这里干活，它指自发汗出持续不止，而不是劳累之后出一阵。
「一身悉肿」一个症状承担了今天几乎全部的分量。全身水肿不是诊断，是一张短鉴别表，而体格检查只需要几分钟。心衰 —— 伴气短、端坐呼吸、颈静脉怒张，以及高血压或心梗史；肾病综合征 —— 晨起眼睑肿最重、尿中泡沫多、尿蛋白，用一张试纸就能查，成本低；肝硬化伴低白蛋白 —— 腹水、黄疸、蜘蛛痣，病史通常自己会说；此外是蛋白丢失性肠病、营养不良、静脉功能不全、淋巴水肿、甲状腺病的两侧、妊娠，以及药物：钙通道阻滞剂、非甾体抗炎药、皮质类固醇、噻唑烷二酮类、加巴喷丁类、雌激素都在其中。其中两项值得直说，因为它们被漏掉的原因恰好相反：**水肿伴气短，在排除之前是心衰**；**儿童在咽痛或脓疱疮之后一两周内出现的水肿，在排除之前是链球菌感染后肾小球肾炎** —— 查血压、尿常规、ASO、补体 C3 就能开始，而这张表里很少有哪像它一样，拖本身就是伤害。
组成是第二个看点和这首方被反复讨论的原因：麻黄 —— 辛温，其活性生物胺属拟交感胺 —— 与石膏这味寒性矿物同锅。这个古典配伍是自觉的，也是历代争论的焦点。对今天的读者要紧的是：麻黄碱类升高血压与心率、造成失眠与尿潴留，与单胺氧化酶抑制剂、兴奋剂、降压药相互作用，并出现在运动禁用清单上。高血压、冠心病、心律失常、青光眼、前列腺增生、甲状腺病的人，不是含麻黄方的适用对象 —— 这句话不依赖对这首方疗效的任何看法。石膏是含水硫酸钙，不是滑石，也不是石灰，把这三样搞混是真实的采买错误。甘草带甘草酸问题：假性醛固酮增多症式的钠水潴留伴失钾，与排钾利尿剂、地高辛或蒽醌类泻药同用时风险最大，而本方里它与麻黄同在。生姜是浓缩的辛温之品，大枣是浓缩的糖负荷。
古典原文排除了发热。这一句要留下：**水肿与发热同现，鉴别表就变了** —— 要含脓毒症、感染性心内膜炎、蜂窝织炎、急性肾炎。孕期与哺乳期没有充分的人体安全性数据，孕期为绝对排除项。中文文献里这方多用于肾病与水肿场景，规模小、方法学质量有限；本库如实记「研究存在」，不记「疗效已被确立」。