生地黄，别名：地黄、生地、地髓、原生地、干生地、苄、芑、牛奶子、婆婆奶，拉丁文名：Rehmannia glutinosa (Gaetn.) Libosch. ex Fisch. et Mey.玄参科、地黄属植物，地黄的块根，多年生直立草本。喜温和气候及阳光充足之地，怕积水，为清热凉血药。用于温热病热入营血，身热口干、舌绛或红等症状，有清热生津滋阴，养血的功效。中国各地均有生产。
性状鉴别 呈不规则团块或长圆形， 中间膨大，两端稍细，长6-12cm，真径3-6cm，有的细长条状，稍扁而扭曲。表面灰黑色或棕灰色，极皱缩，具不规则的横曲纹。体重，质较软韧，断面灰黑色、棕黑色或乌黑色，微有光泽，具粘性。气微，味微甜。以块大、体重、断面乌黑油润、味甘者为佳。
呈不规则的圆形或长圆形块状，长6～12厘米，总状花序。直径3～6厘米；表面灰棕色或灰黑色，全体皱缩不平，具不规则的横曲纹；细小的多为长条状，稍扁而扭曲；质柔软，干后则坚实，体重，不易折断，断面平坦，紫黑色或乌黑色而光亮，显油润，具粘性；气微香，味微甜。以肥大、体重、断面乌黑油润者为佳。主产河南、浙江、河北、陕西、甘肃、湖南、湖北、四川，山西等地亦产，以河南所产者最为著名。河南栽培者，称怀庆地黄Behmannia glutinosa Libosch。F。 Hueichingenis （Chao et Schih） Hsiao，其主要特点为植株较大；根茎较肥大，呈块状、圆形或纺锤形；花不密集于茎顶，成稀疏的
地黄根茎中含有β-谷甾醇（β- Sitosterol）、甘露醇（Mannitol）及少量豆甾醇（Stigmasterol）、微量的菜油甾醇（Campesterol）。亦含地黄素（Rehmannin）、梓醇（Catalpol）、二氢梓醇（Dihydrocatalpol）、乙酰梓醇（Acetylcatalpol）、单密力特甙（Danmelittoside）、密力特甙（Melittoside）、去羟栀子甙（Geniposide）、筋骨草甙（Ajugoside）、胡萝卜甙（Daucosterol）、1-乙基-β-D-半乳糖甙（1-Ethyl-β-D-galactoside）、地黄甙（Rehmannioside）A、B、C、D等环烯醚萜、单萜和甙类。 亦含有机酸类， 如: 苯甲酸（Benzoic acid）、苯乙酸（Caprylic acid）、3-甲氧基-4-羟基苯甲酸（3-Methoxy-4-hydroxybenzoic acid）、肉桂酸（Cin- namic acid）、油酸（Oleic acid）、亚油酸（Linoleic acid）、棕榈酸（Palmitic acid）、硬脂酸（Stearic acid）、辛酸（Caprylic acid）、壬酸（Nonanoic acid）、癸酸（Decanoic acid）、十二烷酸（Lauric acid）、十四烷酸（Tetradecanoic acid）、十五烷酸（Pentadecanoic acid）、十七烷酸（Heptadecanoic acid）、十九烷酸（Nonadecanoic acid）、二十烷酸（Eicosanoic acid）、二十一烷酸（Heneicosanoic acid）、二十二烷酸（Docosanic acid）等。
尚含有水苏糖（Stachyose）、葡萄糖（Glucose）、蔗糖（Sucrose）、果糖（Fructose）、棉子糖（Raffi- nose）、甘露三糖（Mannotriose）、毛蕊花糖（Verbas- cose）、半乳糖（Galactose）以及维生素A类物质。
a.对心脏的作用: 实验证明：生地黄流浸膏对蛙心的收缩力有显著增强作用，对衰弱的心脏更显著， 但大剂量能使正常蛙心中毒，大白鼠静脉注射地黄的乙醇提取物、水提取物，对心脏有明显的抑制作用，使心跳变慢甚至停止。因此，大剂量使用地黄时应注意对心脏的毒性。
b.对血压的影响:大鼠腹腔注射怀地黄水、醇、醚提取液，结果表明：水提取液对急性实验性高血压有明显降压作用， 而醇、醚提取液对高血压无明显影响，对寒冷（室温23℃）情况下的血压则有稳定作用。地黄浸膏静脉注射于家兔和狗可使血压上升。蟾蜍后腿灌流时， 中等浓度使血管收缩，高浓度则使血管扩张。给麻醉犬及兔静脉注射怀庆地黄的醇提取液可使血压下降。实验证明:六味地黄汤对大白鼠实验性 肾性高血压有明显的降血压、改善肾功能、降低病死率的作用。
100%的生地注射液给大鼠腹腔注射， 每天 1ml，连续6天， 能使接受60钴照射所致的血小板损害减轻，回升加快。
3.对血糖的影响 地黄对血糖的作用有待进一步研究。煎剂、浸剂或醇浸膏给家兔灌胃或注射后， 能降低正常血糖和由肾上腺素、氯化胺引起的高血糖。曾有报道，兔皮下注射地黄醇浸膏溶液2g/kg 或灌胃4g/kg均可使血糖下降。注射给药比较明显， 给药后4小时血糖降至最低水平。肌注地黄醇浸膏溶液20g，也可抑制和预防肾上腺素所致的兔血糖升高。单味生地降血糖作用比葛根显著；八味地黄丸的降血糖作用并不强于单味地黄。有人报道八味地黄汤对四氧嘧啶引起的大鼠高血糖有降低作用。另有报道 地黄水或醇浸出物仅降低正常兔血糖， 而对肾上腺素所致的高血糖无效。
4.对中枢神经系统的作用 怀地黄有明显镇静作用，其作用部位可能在大脑皮层。其水提取液可抑制小鼠的自主活动， 并能加强阈下催眠剂量戊巴比妥钠和硫喷妥钠的催眠作用，同时也能对抗安钠咖的兴奋作用， 但不能对抗硝酸士的宁和戊四氮所致的惊厥作用。地黄的镇静作用有利于缓解高血压病人的症状，明显改善高血压病人引起的失眠，有效率达 94%。有人认为地黄的镇静成分主要为水溶物，口服地黄水煎浸膏剂、醇浸剂或腹腔注射 10g/kg 均能对戊巴比妥钠的催眠效应产生协同作用。
5.抗炎、抗过敏作用 地黄煎剂灌胃对大白鼠甲醛性关节炎和蛋清性关节炎有明显的对抗作用，并能抑制松节油皮下注射引起的肉芽肿和组胺引起的毛细血管通透性的增加。地黄水提取液对组胺引起的血管通透性增加和醋酸引起的小鼠腹膜炎有明显抑制作用，对蛋清所致急性炎症也有抗炎作用， 而地黄的醇及醚提取液则无抗炎作用。
7.对内分泌的影响 地黄具有对抗地塞米松对垂体-肾上腺皮质系统的抑制作用， 并能促进肾上腺皮质激素的合成。临床观察发现，地黄与糖皮质激素合用可减少激素引起的阴虚阳亢的副作用。生地与地塞米松合用， 能使家兔皮质酮浓度逐渐上升，但病理学观察则显示其对兔的垂体和肾上腺皮质形态学未见明显改变， 从而提示生地能减轻由糖皮质激素对兔垂体-肾上腺皮质系统功能和形态的影响。动物实验表明: 地黄能对抗连续服用地塞米松后血浆皮质酮浓度下降，并能防止肾上腺皮质萎缩。地黄煎剂灌胃能显著降低大白鼠肾上腺维生素 C 的含量。
8.抗肿瘤作用 六味地黄汤能明显对抗N-亚硝基氨酸乙酯诱发小鼠前胃鳞状上皮细胞癌（类似人的食管癌）的作用。一般认为， 地黄的抗肿瘤作用与增加免疫功能有关，地黄具有促进机体淋巴母细胞的转化、增加 T 淋巴细胞数量的作用， 并能增强网状内皮系统的吞噬功能，特别对免疫功能低下者作用更加的明显。
Rehmanniae, Alias: yellow, habitat, land marrow, natively, dry habitat, benzyl, dioxin, milk child, mother milk, Latin name:.. Rehmannia glutinosa (. Gaetn) Libosch ex Fisch et Mey Scrophulariaceae. rehmannia plants, ground yellow root, erect perennial herb. Thermophilic and sunny climate and the land, fear of water, as Qingreliangxue medicine. For febrile disease heat penetrating the blood, fever, dry mouth, tongue purple or red and other symptoms, there is heat Sheng Jin Yin, nourishing effect. Have production throughout China.
Scrophulariaceae Rehmannia Rehmannia plant roots. Also known as ground pulp ("Classic"), the original habitat ("Materia Medica of justice"), dry habitat ("Chinese Medicine Chi"). The original plant to yellow AKA: benzyl ("Ya"), dioxin ("Do not record"), milk child ("Ben Cao Yan Yi"), mother milk ("Shortage of Materia Medica"), the dog breast ("plant name, map test "), mountain tobacco, mountain cabbage, jug flowers, rum trees, trees honeypot. Ziyin heat, cooling blood effect. (Fresh ground yellow: heat and cooling blood, moistening fluid.)
Chinese scientific name dihuang Latin name Rehmannia glutinosa (Gaetn.) Libosch. Ex Fisch. Et Mey. Nickname habitat, to pulp, the original habitat, dry habitat, benzyl, dioxin, milk, child, mother milk sector Flora door Angiosperms Gang Twins leaf plant Subclass gamopetalous Asia outline tubular flowers. Branch Scrophulariaceae genera farming Huang Huang territorial distribution area distributed in most parts of China, Korea, Japan, too. English dried rehmannia root
Contents 1 Morphological characteristics Growth habit 2 3 4 Geographical distribution of cultivation techniques cultivation preparation ▪ ▪ ▪ harvesting and processing methods of cultivation harvest storage ▪ ▪ ▪ Common Diseases 5 medicinal herbs processing processing identification ▪ ▪ ▪ Indications ▪ Historical records medicinal properties ▪ ▪ main component of the pharmacological effects of 6 research references
Morphological characteristics editor
Body height 12-30 cm, densely gray multicellular villous and glandular hairs. Fleshy roots, when bright yellow,
Under cultivation conditions, up to 5.5 cm in diameter, purple stems. Leaves usually integrated in the stem base rosette, up strongly reduced to bracts, or gradually reduced and alternate on stem; leaf blade ovate to oblong, green above, below or to purplish mauve, long 2-13 cm, 1-6 cm wide, with irregular edges scalloped or even blunt serrated teeth; base tapering to stalk, veins sunken above, below uplift. 0.5-3 cm of flowers with long stems, stems, thin, curved and then rose slightly at the top of the stem are arranged in racemes or almost all solitary and axillary and dispersed in the stem; calyx length 1-1.5 cm, densely multicellular villous and white long-haired, with 10 raised veins; calyx teeth 5, oblong-lanceolate or ovate-lanceolate Or how many triangles, 0.5-0.6 cm long, 0.2-0.4 cm wide, thin front two each and cracking leaving Calyx teeth as much as a total of seven; corolla 3-4.5 cm long; corolla tube much bowing, purple outside, are multicellular villous; corolla lobes, 5,
REHMANNIAE plant morphology - to yellow
REHMANNIAE plant morphology - to yellow (5)
Apex obtuse or slightly concave inner surface of yellow and purple, purple outside, both sides are multicellular villous, 5-7 mm long, 4-10 mm wide; stamens 4; medicine room oblong, 2.5 mm wide 1.5 mm, base splayed, leaving the two drugs chambers are arranged in a straight line, ovary childhood room 2, when old torn from a room because the diaphragm, glabrous; style top expanded into two sheet-like stigmas. Capsule ovate to ovate, 1-1.5 cm long. Fruit period from April to July. 
Perennial erect herb. Height 10-30cm, all densely white long glandular hairs, fleshy root. Leaf base to generate plexus, obovate-lanceolate, base tapering into a stalk, margin irregular blunt teeth, wrinkled foliage, purplish below. It stems from the foliage extraction, inflorescence racemose; calyx 5-lobed; stem purple. Also many basal rosette, ovate to oblong, jagged edges. Racemes, tubular calyx, calyx teeth 5, Corolla purple, about 4cm, 2-lipped, lobes 5, on both sides of the coat, flowering from April to May, fruiting from July to August. Capsule ovate to ovate, small seeds. 
Character identification irregular clumps or oblong,
Intermediate enlargement, ends a little thin, long 6-12cm, really diameter 3-6cm, some thin strips, a little flat and twisted. Surface gray-black or brown-gray, very wrinkled, with irregular cross curved lines. Weight, soft quality and tough, gray-black section, brown or black black, slightly shiny, with tack. Gas micro, slightly sweet taste. Large blocks, weight, section black oily, sweet preferred.
Microscopic identification root cross-section: cork layer several columns cork cells. Cortical parenchyma cells were loose; a majority scattered secretory cells, containing orange oil droplets; occasional stone cells, phloem cells secrete less. Cambium into the ring. Wood ray broad; catheter sparse, radially arranged. 
Growth habit editor
Thermophilic and climate and abundant sunshine, the fear of water, avoid continuous cropping, its roots growing rapidly at 25-28 ℃.
Born 50-1100 meters above sea level sandy loam, barren hillside, at the foot of the wall, roadsides, etc.. 
Geographical Distribution Edit
Distributed in Liaoning, Hebei, Henan, Shandong, Shanxi, Shaanxi,
Gansu, Inner Mongolia, Jiangsu, Hubei and other provinces.  It originated in China are distributed in Beijing, Tianjin, Henan, Hebei, Liaoning, Shandong, Zhejiang, Jiangsu, Anhui, Shanxi, Shaanxi, Inner Mongolia, Hunan, Hubei, Sichuan and other places, the main origin of Henan, Liaoning, Hebei , Shandong, Zhejiang. Korea, Japan, too. 
Cultivation Technical Editor
They are cultivated around the country and abroad. 
Dihuang thermophilic and somewhat humid climate, like light, like fertilizer, avoid stagnant water, should select the soil deep, fertile, well-drained sandy loam is uploaded culture, fine clay rhizome thin, poor quality, not cropping, continuous cropping want more than three years, the previous crop bogey radish, oil and the like.
Bozhou region to the main rhizome propagation, autumn excavation, choose finger thickness and seed storage root sand burial,
The arrival of spring after the thaw of the earth, Shizujifei, leveling land, the kinds of root cut into small pieces 3-5 cm to row spacing 30 × 30 厘米 open hole, put some large roots per hole, the small root put in two, sprinkle a little ash (lime also) complex soil 6 cm, 15--20 ℃ 10 days emergence, general mu seed quantity from 40 to 50 kg. Height 5 cm, the combination of weeding, thinning, leaving one per hole, if Deficiency off the ridge may fill load, leaving acres of planting density 4000-6000, land fertilizer live, may be appropriate dilute some barren land available some slightly thick, 8000-10000 is required. Try ripper, deep cultivators, seedlings beside shallow tillage, ridge between deep cultivators, after the plant closure line, not Row crop cultivators, to impose fertilizer, human waste to dilute the main mu 20 kg ammonium sulfate, cake 50 kg, administered twice, the first time around the beginning of summer, the second in front of the department, because the front and rear of the Department of underground rhizomes are swollen, so fertilizer should be timely, after fertilization, in case of dry weather to be anxious when watering. Never pour large diffuse, or to rot, affecting production, more rain in summer, in front of the plant closure line to combine ripper Bacon, in order to avoid stagnant water the roots. In case of bolting phenomenon, except to try to go moss bud, prompting the nutrient concentration in the underground rhizomes grow, properly managed, fresh ground yellow 2000--5000 kg per mu.
Harvesting and processing
Autumn in October, on the ground leaves gradually yellow,
Election sunny dug roots, shake net soil, remove fibrous roots. As with fresh yellow, you can sand buried storage stand. Huang dry in the sun, a fire can bake, bake sun side edge sweating, to the root block no hard heart, soft so far. Foxglove Method: Wash REHMANNIAE dry, soak into the rice wine, about 3-5 days, and then put the pot and add water to bake and cook, with wine every hundred pounds of fresh raw land 10 pounds, 30 pounds of water, to be immersed in alcohol to yellow ( normally takes 2-3 hours), then remove to yellow after cooler put sun exposure, until dry is foxglove, general discount of about 30% dry. In case of rainy days, you can not use the emergency fire fast drying bake, bake side edge tubers will be yellow squash, being careful not to crush it, to prevent the juice spills, affecting production, reduce the quality of medicine. When the pressure should be light, avoid single pressure once the pressure is not good, it is best to periodically re-voltage, three of five can, after slowly dried. Habitat due to higher sugar content, degree in hand touch dry stick, mainly dry and hard, otherwise wet goods. Remember not to fumigation with sulfur.
Fall excavation, generally 10 to November, excavation roots, remove reed head, leaf, fibrous roots, wash the soil, is the fresh ground yellow. Fresh ground roasted yellow placed directly on the bed slowly baking, must often turning to gradually dry the interior color black, roasted root to eighty percent, soft body, can be removed when the skin hardens, shape dough for REHMANNIAE; habitat add rice wine steamed to black-run, as Rehmannia. It can also be used to dry method.
To yellow leaf spot diseases are, ring rot, before the onset of use Zineb or Bordeaux mixture foliar 2-3 times, 800 times tuzet IRRIGATING once, aphids, spider mites, grubs and other available conventional control methods.
Medicinal value edit
Medicinal roots. 
Irregular round or oblong block, 6 to 12 cm long,
REHMANNIAE - Chinese herbal medicine
REHMANNIAE - Chinese herbal medicine
3 to 6 cm in diameter; surface gray-brown or gray-black, all wrinkled uneven, with irregular horizontal curved lines; mostly small elongated, slightly flat and twisted; soft, dry the solid, weight, easy broken, section smooth, black and bright purple or black, which was oily, with viscosity; gas slightly fragrant, slightly sweet taste. In hypertrophy, weight, oily black section is preferred. Production of Henan, Zhejiang, Hebei, Shaanxi, Gansu, Hunan, Hubei, Sichuan, Shanxi and other places are also produced in order to Henan by the middle of the most famous. Henan growers, says Huai Rehmannia Behmannia glutinosa Libosch. F. Hueichingenis (Chao et Schih) Hsiao, the main features of the larger plants; rhizome relatively hypertrophy, was massive, round or fusiform; spend less dense at the top of the stem, into a sparse racemes.
Dry yellow: a little bubble of water, wash sediment impurities, fish stew Run,
Sliced dried or drying. REHMANNIAE charcoal: Take Wash dry yellow, set calcined pot fitted Bacheng full, cover pot top, two pan sealing seams with Wong, the ballast, with civil and military fire satin to stick on the bottom of the pot lid The white paper was burnt yellow for the degree, blocked fire doors, let cool, remove; or the dry yellow fried carbon can also set the pot directly. "Outline": "" by "so-called dry yellow, that is habitat of dry who is also its method to take dihuang a hundred pounds, six pounds fat person selected, washed, sun make microfold to pick the next person washing wood mortar pound wringer do, throw wine and then pound, juice before mixing yellow, Japan dried or drying by the fire. "
Efficacy: heat Sheng Jin Yin, nourishing.
Governance Yin fever, thirst, vomiting, epistaxis, vaginal bleeding, menstrual disorders, fetal irritability, constipation, vaginal injuries.
Taste: bittersweet, cool.
① "The Classic": "sweet; cold."
② "Do not record" "bitter, non-toxic."
Into the heart, liver and kidney.
① Li Gao:, start, foot Shao, hand, foot Jue Yin. ʱ??
② "Herbal Decoction": "start with the sun, Shaoyin."
③ "Thunder concocted herbal solution": "into the heart, liver, spleen, lung Four Classics."
Dosage Oral: Jiantang, 15 to 25 grams, a large dose
50 to 100 g, Aogao or into pills, powder. Topical: pound deposited.
Medication bogey should:
Spleen diarrhea, eat less empty stomach, mediastinoscopy phlegmatic were careful service.
① "Treatise on Thunder Gun": "Wuling guilty of copper and iron, a cause renal elimination and white mustache hair loss Rong Wei also."
② "Annotations of Materia Medica": "get Ophiopogonis, sake good, evil mother of pearl, fear wu weed."
③ "Collection of Essentials": "bogey radish, light blue, white leek, scallion white."
④ "Medicine": "in the cold there is swelling of the liver, easy to vent ban."
Fresh ground yellow heat fluid, cool, bleeding; for hot Shangyin,
To yellow porridge
To yellow porridge
Tongue purple polydipsia, hair patches rash, vomiting, epistaxis, sore throat. Rehmanniae Qingreliangxue, Yin, Sheng Jin; for fever, polydipsia, hair patches rash, deficiency heat, vomiting, epistaxis, diabetes, infectious hepatitis.
1. Qingreliangxue. The taste joys, cold infiltration Blood can Qingying blood per heat and cooling. For fever of warm disease, thirst, red purple, at 方如清 camp soup. In addition, the product still bleeding through the cooling effect, can be used in a variety of hemorrhagic blood heat.
2. YangYinShengJin. The quality Run more liquid can Yin, sweet and cold can be fluid, there is the role of nourishing yin and moistening fluid. For warm late disease, evil heat disability allowance by. Also, take the goods Ziyinqingre, commonly used in the treatment of wang dry mouth and thirst, dizziness, prescriptions, such as Liu Wei Di Huang Wan. Diabetes is a hot Sheng disability allowance Zheyi treatment available habitat.
The main ingredient
To yellow rhizome containing β- sitosterol (β- Sitosterol), mannitol (Mannitol) and a small amount of stigmasterol (Stigmasterol), small amounts of vegetable oil sterol (Campesterol). Also containing flavin (Rehmannin), catalpol (Catalpol), dihydro catalpol (Dihydrocatalpol), acetyl catalpol (Acetylcatalpol), single secret special force glycosides (Danmelittoside), secret special force glycosides (Melittoside), didanosine Gardenia glycosides (Geniposide), Ajuga glycosides (Ajugoside), daucosterol (Daucosterol), 1- ethyl -β-D- galactosidase (1-Ethyl-β-D-galactoside), to yellow glycosides (Rehmannioside) A, B , C, D, etc. iridoid monoterpenes and glycosides. Also contain organic acids, such as: benzoic acid (Benzoic acid), acid (Caprylic acid), 3- methoxy-4-hydroxy acid (3-Methoxy-4-hydroxybenzoic acid), cinnamic acid (Cin- namic acid), oleic acid (Oleic acid), linoleic acid (Linoleic acid), palmitic acid (Palmitic acid), stearic acid (Stearic acid), caprylic (Caprylic acid),
Azelaic acid (Nonanoic acid), capric acid (Decanoic acid), lauric acid (Lauric acid), myristic acid (Tetradecanoic acid), pentadecanoate (Pentadecanoic acid), Heptadecanoic (Heptadecanoic acid), nonadecanoic acid (Nonadecanoic acid), eicosanoids (Eicosanoic acid), heneicosanoic acid (Heneicosanoic acid), behenic acid (Docosanic acid) and the like.
Still contains stachyose (Stachyose), glucose (Glucose), sucrose (Sucrose), fructose (Fructose), raffinose (Raffi- nose), mannose trisaccharide (Mannotriose), mullein sugar (Verbas- cose), galactose (Galactose) and vitamin A substances.
Fresh ground yolk contains 20 kinds of amino acids, of which the highest concentrations of arginine; dry yellow has 15 kinds of amino acids, including alanine highest content. Rehmannia also contains iron, zinc, manganese, chromium and other 20 kinds of trace elements. 
1. The effect on the cardiovascular system
a effect on the heart: The experiment proved that: REHMANNIAE fluidextract frog heart contractile force has significantly enhanced the role of the weakened heart more significant, but large doses can make normal heart poison frog, rat intravenous injection of ethanol Huang extracts, water extracts significantly inhibited the heart, the heart slows down or even stop. Thus, large doses should be yellow note on heart toxicity.
b effect on blood pressure: intraperitoneal injection of Rehmannia water, alcohol, ether extract, results showed: water extract on acute experimental hypertension have significant antihypertensive effect, but alcohol, ether extract had no significant hypertension effects on blood pressure cold (room temperature 23 ℃) in the case of the stabilizing effect. Dihuang extract intravenous injection in rabbits and dogs can make blood pressure rise. Toad hind legs when perfusion, moderate concentrations vasoconstriction, high concentrations cause blood vessels to dilate. To anesthetized dogs and rabbits intravenously Huai Rehmannia alcohol extract blood pressure can drop. Experimental results show: Liu Wei Di Huang Tang on experimental rats
Renal hypertension significantly lower blood pressure and improve kidney function, reduce the role of mortality.
2. The role of the blood on the ground yellow ethanol extracts obtained yellow needles can reduce the clotting time in rabbits, but its role is not obvious decoction. Experimental results show: Rehmannia, Rehmannia, habitat charcoal, charcoal foxglove water decoction can significantly shorten the clotting time, and no significant difference between them.
DIC effect study of nine different Rehmannia Rehmanniae and were proved in domestic Rehmannia One anti-thrombin, the two have a role to activate the fibrinolytic system, can significantly antithrombin and endotoxin-induced DIC occurs in rats, but no platelet aggregation.
Dihuang both hemostatic effect, another anti-clotting effect, the mechanism needs further study.
100% of the habitat injection to rats by intraperitoneal injection daily 1ml, six days in a row, can accept the 60 cobalt irradiation-induced platelet damage mitigation, rebounded quickly.
3. Impact on blood sugar glucose to yellow for further study. Decoction, infusion or alcohol extract to rabbits orally or injected, can reduce normal blood sugar and high blood sugar from the adrenaline caused by ammonium chloride. There have been reports, rabbits subcutaneously to retinol extract solution 2g / kg or orally 4g / kg can make blood sugar dropped. Injection is more obvious, four hours after administration of blood glucose levels to a minimum. Intramuscular injection of retinol extract solution 20g, can be suppressed, and the prevention of adrenaline-induced rabbit blood sugar. Single herb Pueraria habitat hypoglycemic effect than significantly; hypoglycemic effect Ba Wei Di Huang Wan is not stronger than a single flavor to yellow. Ba Wei Di Huang Tang was reported in rats hyperglycemic alloxan induced lowering effect. Another report
To yellow water or alcohol extract only reduce blood sugar normal rabbit, while adrenaline-induced hyperglycemia is invalid.
But there are also contrary to reports, land yellow alcohol extract, decoction, flooding experiments on rabbits, etc., were not observed to hypoglycemic effect yellow.
4. The role of the central nervous system of Rehmannia significant sedation, its site of action may be in the cerebral cortex. Its water extract can inhibit locomotor activity in mice, and can enhance the hypnotic effects of subliminal hypnotic dose of pentobarbital sodium thiopental, but also against the excitatory effects of sodium benzoate, but not against nitrate disabilities Ning and pentylenetetrazol-induced convulsant effect. Yellow sedation to help ease the symptoms of hypertensive patients, significant improvement in insomnia patients with hypertension caused by the effective rate of 94%. Some people think that to yellow sedation composed mainly of water-soluble material, oral Dihuang decoction extract agent, alcohol infusion or intraperitoneally 10g / kg could hypnotic effect of pentobarbital sodium to produce a synergistic effect.
5. anti-inflammatory, anti-allergic effects to yellow decoction on rat formaldehyde arthritis and arthritis egg white has obvious antagonism, and can inhibit capillary permeability and histamine turpentine subcutaneous granuloma caused due of the increase. Increased vascular permeability in mice and acetate yellow water extract of histamine-induced peritonitis caused significant inhibition of egg-induced acute inflammation also have anti-inflammatory effects, and to the yellow of alcohol and ether extract had no anti-inflammatory effects ʱ??
There are reports that dry yellow water extract can significantly increase the peripheral blood T lymphocytes, dry yellow alcohol extract could promote anti SRPC antibody - hemolysin, reduce peripheral blood T lymphocytes, no water extract of Rehmannia this effect.
6. The anti-fungal effect dihuang flooding agent for Trichophyton mentagrophytes, plaster-like small spores rubrum, wool-like small spores rubrum
And Audubon Ang small spores rubrum and other fungal growth inhibition.
7. The impact of endocrine ground yellow effective against dexamethasone on the pituitary - adrenal system inhibition, and can promote the synthesis of adrenal hormones. Clinical observations, to yellow in combination with glucocorticoids may reduce the side effects of hormone-induced hyperactivity. Habitat and dexamethasone in combination, can make rabbits corticosterone concentration gradually increased, but the pathological examination is displayed their pituitary and adrenal cortex morphology of the rabbit did not change significantly, suggesting habitat can be reduced by a glucocorticoid on rabbit pituitary - adrenal system function and morphology. Animal experiments show that: dihuang can fight back for taking dexamethasone plasma corticosterone concentrations decreased, and prevent adrenal atrophy. Dihuang decoction can significantly reduce the amount of vitamin C in the adrenal gland in rats.
8. The anti-tumor effect Liuweidihuang soup can obviously fight Ethyl N- nitroso-induced effects in mice before gastric squamous cell carcinoma (similar human esophageal cancer) is. Generally believed that the anti-tumor effect to yellow and increase immune function related to Huang has transformed lymphoblastoid cell body to promote and increase the role of T lymphocytes, and can enhance the phagocytic function of the reticuloendothelial system, especially the role of immunocompromised persons more obvious.
9. Other effects have been reported in anesthetized dogs after intravenous injection of Huang extract, increased urine output per unit of time, may be associated with cardiac diuretic principle and dilation of blood vessels and other effects; but there are reports, to yellow decoction extract and alcohol extract diuretic effect on rats could not be confirmed. 
Provenance research editor
】 【Research from "Shen Nong's Herbal Classic";
① "outline": "people today but to Huai Huang on the ground, but also at any time throughout the Rise and Fall of different Seoul, to yellow newborn collapse, the leaves of cabbage and hair astringent as a mountain, deep blue foliage, leaf mustard deemed small and quite thick do not fork Ah, throw leaves stems, fine hairs, stems shoot open a small cone flowers, red and yellow, solid grains such as wheat, root length three or four inches, as thin as a finger, red skin yellow, such as sheep hoof root and carrot roots, exposed dry is black. raw food as rustic, vulgar call their seedlings as mother milk ancients seed, now but three root Wang? "Mountains recorded" cloud, to yellow tender shoots off its side leaves as vegetables, and even benefits to the people. " Materia Medica "In February, adopted in August root, special properties are not poor, Utah in August Grottoes, leaf essence, entirely owned by root, Miao was born in February, it has been nourishing essence roots than leaves, as the first month September picking by special good, but also affordable and steam exposure. "
② "Herbal multiply Ya Banji": after planting to yellow, its soil will be bitter, can be kind of Achyranthes year only, then two years can be kind of yam, turn sweet taste on foot decade, before they can be cropping to yellow, otherwise bitter form thin, bear medicine also. ʱ??
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REHMANNIAE plant morphology ...
REHMANNIAE plant morphology ... (5)
Pharmacy · Related Tech Terms
Medicinal herbs ▪ ▪ ▪ ▪ fresh authentic ingredients medicine ▪ natural medicine
▪ ▪ collect and harvest production processing ▪ ▪ ▪ wither period of germination
▪ Storage ▪ drying ▪ dry season ▪ ▪ drying
Moth mildew ▪ ▪ ▪ ▪ swap ▪ weeping original plant identification
▪ original animal identification ▪ original mineral identification based source identification ▪ ▪ ▪ rhizome root
Leaves skin ▪ ▪ ▪ ▪ Fruit ▪ flower seeds
Characters Description whole plant ▪ ▪ ▪ ▪ ▪ the size of the surface characteristics of shape
Color and texture ▪ ▪ ▪ ▪ section fracture surface features ▪ chrysanthemum heart
1. to yellow. China Plant Gallery. 2014-01-25 [reference date 2014-01-25]
2. dihuang habitat. Flora of China. 2014-01-25 [reference date 2014-01-25]
3. REHMANNIAE of modern research. Medical Education Network [reference date 2013-12-2]