气温。味苦。无毒。主咳逆上气。温疟寒热洗洗在皮肤中。妇人漏下绝子。诸恶疮
疡金疮。煮汁饮之。
当归气温。禀天春升之木气。入足厥阴肝经。味苦无毒。得地南方之火味。入手少阴心
经。
气升味浓。阳也。其主咳逆上气者。心主血。肝藏血。血枯则肝木挟心火上刑肺金。而咳逆
上气也。当归入肝养血。入心清火。所以主之也。肝为风。心为火。风火为阳。但热不寒者
为温疟。风火乘肺。肺主皮毛。寒热洗洗在皮毛中。肺受风火之邪。不能固皮毛也。当归入
心入肝。肝血足则风定。心血足则火息。而皮毛中寒热自愈也。妇人以血为主。漏下绝子。
血枯故也。当归补血。所以主之。诸恶疮疡。皆属心火。心血足则心火息。金疮失血之症。
味苦清心。气温养血。所以皆主之。用煮汁饮者。取汤液之功近而速也。
制 方:
当归同黄 。名补血汤。治血虚发热象白虎症。同川芎。名佛手散。治失血眩晕。本味
酒煮
。治血虚头痛。同知母。治衄血不止。同牛膝、甘草梢。治小便血。为末酒服。治心下刺痛
。酒浸。治臂痛。用一两水煎露服。治温疟。用二两。吴萸一两同炒。去萸为末蜜丸。治久
痢
。同白芷。治大便不通。同生地。治妇人血虚。同川芎、砂仁。治胎动及胎死腹中。同炮姜
。治产后血胀。同白蜜。治产后腹痛。同黄 、白芍。治产后自汗。同白术。治面黄色枯。
同白芍、川芎等分。香附加三倍丸。名调经丸。治经水不调。同麦冬、甘草。治热病郑语神
昏。同苁蓉、山药、小麦。治肾燥泄泻。同桂枝、白术、甘菊、牛膝。治痹。同牛膝、鳖甲
、陈皮、生姜。治疟在阴分久不止。同枣仁、远志、茯神、人参。治心虚不眠。同人参、川
芎。治产难倒生。同白胶、地黄、白芍、续断、杜仲。治女人血闭无子。同地榆、金银花、
红曲、滑石。治利下纯血。
【气味】气微温。味苦。无毒。主治咳嗽气逆上冲。治疗温疟引起的皮肤中阵阵恶寒发热。治疗妇人经血淋漓不尽及不孕症。治疗各种恶疮、痈疡和金创伤。将当归煮成汁液饮用。
当归性气温，禀受春天升发的木气，归入足厥阴肝经；味苦且无毒，得自南方火地的味道，归入手少阴心经。
其气上升而味道浓厚，属于阳。它主治咳嗽气逆的原因在于：心主血，肝藏血。若血液枯竭，则肝木挟带心火上炎刑克肺金，从而导致咳嗽气逆。当归进入肝脏以养血，进入心脏以清火，因此能主治此症。肝对应风，心对应火，风和火都属于阳。只有热而没有寒的症状称为温疟。风火之邪侵犯肺部，因肺主皮毛，所以出现皮肤中阵阵恶寒发热的症状。这是因为肺受到风火邪气的侵袭，不能固护皮毛。当归进入心和肝，肝血充足则风息，心血充足则火灭，于是皮肤中的寒热症状自然痊愈。妇女以血为本，经血淋漓不尽和不孕，都是由于血枯所致。当归能补血，所以主治这些病症。各种恶疮痈疡，都归属于心火。心血充足则心火平息。金创失血的病症，因其味苦能清心火，气温能养血，所以都能主治。采用煮汁饮用的方法，是取汤剂药力迅速直达病所的功效。
【配伍应用】
当归与黄芪同用，名为“补血汤”，治疗血虚发热类似白虎汤证的情况。与川芎同用，名为“佛手散”，治疗失血引起的眩晕。单味当归用酒煮服，治疗血虚头痛。与知母同用，治疗鼻出血不止。与牛膝、甘草梢同用，治疗小便出血（研末，酒送服），治疗心下刺痛。用酒浸泡，治疗手臂疼痛。用一两水煎后露天放置服用，治疗温疟。用二两，与吴茱萸一两同炒，去掉吴茱萸，研为细末，蜜丸服用，治疗久痢。与白芷同用，治疗大便不通。与生地黄同用，治疗妇人血虚。与川芎、砂仁同用，治疗胎动不安及胎死腹中。与炮姜同用，治疗产后血胀。与白蜜同用，治疗产后腹痛。与黄芪、白芍同用，治疗产后自汗。与白术同用，治疗面色黄枯。与白芍、川芎等分，加入三倍量的香附制成丸剂，名为“调经丸”，治疗月经不调。与麦冬、甘草同用，治疗热病时的谵语神昏。与肉苁蓉、山药、小麦同用，治疗肾燥泄泻。与桂枝、白术、甘菊、牛膝同用，治疗痹证。与牛膝、鳖甲、陈皮、生姜同用，治疗疟疾在阴分日久不止。与酸枣仁、远志、茯神、人参同用，治疗心虚失眠。与人参、川芎同用，治疗难产胎位不正（倒生）。与阿胶、地黄、白芍、续断、杜仲同用，治疗女性经闭不孕。与地榆、金银花、红曲、滑石同用，治疗下利纯血。
[Flavor and Nature] The nature is slightly warm. The flavor is bitter. It is non-toxic. It primarily treats cough with rebellious qi ascending, warm malaria characterized by shivering chills and fever in the skin, leukorrhea or metrorrhagia leading to infertility in women, and various malignant sores, ulcers, and metallic wounds. Decoct it and drink the liquid.
Danggui (Angelicae Sinensis Radix) has a warm nature, inheriting the spring-uprising Wood Qi of heaven, and enters the Foot-Jueyin Liver Meridian. Its bitter flavor and non-toxicity derive from the Fire flavor of the southern earth, entering the Hand-Shaoyin Heart Meridian.
Its qi ascends and its flavor is profound; thus, it belongs to Yang. The reason it treats cough with rebellious qi is that the Heart governs Blood, and the Liver stores Blood. When Blood is depleted, Liver Wood carries Heart Fire to attack Lung Metal, resulting in cough and rebellious qi. Danggui enters the Liver to nourish Blood and enters the Heart to clear Fire, thereby treating these conditions. The Liver corresponds to Wind, and the Heart corresponds to Fire; both Wind and Fire are Yang. Warm malaria, characterized by heat without cold, occurs when Wind and Fire invade the Lungs. Since the Lungs govern the skin and hair, shivering chills and fever manifest in the skin. This happens because the Lungs, affected by Wind and Fire pathogens, fail to secure the skin and hair. Danggui enters the Heart and Liver; when Liver Blood is sufficient, Wind settles; when Heart Blood is sufficient, Fire extinguishes, and the chills and fever in the skin heal spontaneously. Women are primarily governed by Blood. Leukorrhea/metrorrhagia and infertility are caused by Blood depletion. Danggui tonifies Blood, hence it treats these conditions. Various malignant sores and ulcers belong to Heart Fire. When Heart Blood is sufficient, Heart Fire subsides. For metallic wound blood loss, its bitter flavor clears Heart Fire, and its warm nature nourishes Blood, thus treating all such conditions. Using decoction for drinking takes advantage of the rapid and immediate efficacy of liquid medicines.
[Prescription Applications]
When combined with Huangqi (Astragali Radix), it is named "Blood Tonifying Decoction" (Buxue Tang), treating blood deficiency fever resembling Baihu Tang syndrome. Combined with Chuanxiong (Ligustici Chuanxiong Rhizoma), it is named "Buddha's Hand Powder" (Foshou San), treating dizziness due to blood loss. Boiled alone in wine, it treats headache due to blood deficiency. Combined with Zhimu (Anemarrhenae Rhizoma), it treats persistent epistaxis. Combined with Niuxi (Achyranthis Bidentatae Radix) and Gancao Gao (Glycyrrhizae Radix et Rhizoma tip), it treats hematuria (taken as powder with wine); it also treats stabbing pain below the heart. Wine-soaked, it treats arm pain. One qian decocted in water and exposed to dew treats warm malaria. Two liang, stir-fried together with one liang of Wuzhuyu (Evodiae Fructus), then removing the Evodia, ground into powder and honey-pilled, treats chronic dysentery. Combined with Baizhi (Angelicae Dahuricae Radix), it treats constipation. Combined with Shengdi Huang (Rehmanniae Radix), it treats blood deficiency in women. Combined with Chuanxiong and Sharen (Amomi Fructus), it treats restless fetus and retained dead fetus. Combined with Paojiang (Zingiberis Rhizoma Preparatum), it treats postpartum abdominal distension due to blood stasis. Combined with White Honey, it treats postpartum abdominal pain. Combined with Huangqi and Baishao (Paeoniae Radix Alba), it treats spontaneous sweating after childbirth. Combined with Baizhu (Atractylodis Macrocephalae Rhizoma), it treats sallow and withered complexion. In equal parts with Baishao and Chuanxiong, plus three times the amount of Xiangfu (Cyperi Rhizoma) made into pills, it is named "Regulating Menses Pill" (Tiaojing Wan), treating irregular menstruation. Combined with Maidong (Ophiopogonis Radix) and Gancao (Glycyrrhizae Radix et Rhizoma), it treats delirium and coma in febrile diseases. Combined with Rongrong (Cynomorii Herba), Shanyao (Dioscoreae Rhizoma), and Xiaomai (Tritici Fructus), it treats diarrhea due to Kidney dryness. Combined with Guizhi (Cinnamomi Ramulus), Baizhu, Ganju (Chrysanthemi Flos), and Niuxi, it treats Bi Syndrome (painful obstruction). Combined with Niuxi, Biejia (Trionycis Carapax et Plastrum), Chenpi (Citri Reticulatae Pericarpium), and Shengjiang (Zingiberis Rhizoma Recens), it treats malaria lingering in the Yin aspect for a long time. Combined with Suanzaoren (Ziziphi Spinosae Semen), Yuanzhi (Polygalae Radix), Fushen (Poria Cum Radix), and Renshen (Ginseng Radix et Rhizoma), it treats insomnia due to Heart deficiency. Combined with Renshen and Chuanxiong, it treats dystocia with breech presentation. Combined with Ejiao (Asini Corii Colla), Dihuang (Rehmanniae Radix Praeparata), Baishao, Xuduan (Dipsaci Radix), and Duzhong (Eucommiae Cortex), it treats amenorrhea and infertility in women. Combined with Diyu (Sanguisorbae Radix), Jinyinhua (Lonicerae Japonicae Flos), Hongqu (Monascus Ruber), and Huashi (Talcum), it treats dysentery with pure blood.