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Dazao (Chinese Date)---大枣

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Product Description

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This medicinal is the dried ripe fruit of Ziziphus jujube Mill.(Fam.Rhamnaceae). It is collected in autumn when the fruit is ripe and it is dried by sunlight. It is used in its unprocessed form.

[ Medicinal Properties ]: Sweet, warm; relate to spleen and stomach meridians.

[ Medicinal Efficacies ]: Tonify the middle and replenish qi; nourish blood and induce tranquilization.

[ Clinical Applications ]: 1. Spleen deficiency syndrome       For emaciation, lassitude, lack of strength, loose stool, it is used by itself. For that with severe lassitude and qi deficiency, it is combined with Renshen and Baizhu.

2. Sallowness due to blood deficiency ,hysteria       For sallowness due to blood deficiency, it is used in combination with Shudihuang and Danggui; for hysteria presenting as uncontrolled grieving, laughing or crying, with Xiaomai and Gancao, as in the Ganmai Dazao Decoction.

Furthermore, when it is used with drastic or poisonous medicinals, it has the function of protecting stomach qi and moderating their toxicities.

[ Usage and Dosage ]: 6-15g. Cleave first and then place into the decoction.

大枣为鼠李科植物枣Ziziphus jujuba Mill.的成熟果实。主产于河北、河南、山东等地。秋季果实成熟时采收,晒干,生用。

       【药性】甘,温。归脾、胃心经。        【功效】补中益气,养血安神。       
 
【应用】        1.用于脾虚证。本品甘温,能补脾益气,适用于脾气虚弱,消瘦、倦怠乏力、便溏等症。单用有效。若气虚乏力较甚,宜与人参、白术等补脾益气药配伍。       
 
 2.用于脏躁及失眠证。本品能养心安神,为治疗心失充养,心神无主而脏躁的要药。单用有效,如《证治准绳》治脏躁自悲自哭自笑,以红枣烧存性,米饮调下。因其证多与心阴不足,心火浮亢有关,且往往心气亦不足,故常与小麦、甘草配伍,如甘麦大枣汤(《金匮要略》)。《千金方》还用本品治疗虚劳烦闷不得眠者。       
 
 此外,本品与部分药性峻烈或有毒的药物同用,有保护胃气,缓和其毒烈药性之效,如十枣汤(《伤寒论》),即用以缓和甘遂、大戟、芫花的烈性与毒性。        【用法用量】劈破煎服,6~15g。       
【古籍摘要】        1.《神农本草经》:“安中养脾”。       
 
 2.《名医别录》:“补中益气,强力,除烦闷”。       
 
【现代研究】        1.化学成分:本品含有机酸、三萜苷类、生物碱类、黄酮类、糖类、维生素类、氨基酸、挥发油、微量元素等成分。       
 
 2.药理作用:大枣能增强肌力,增加体重;能增加胃肠粘液,纠正胃肠病损,保护肝脏;有增加白细胞内cAMP含量,抗变态反应作用;有镇静催眠作用;还有抑制癌细胞增殖、抗突变、镇痛及镇咳、祛痰等作用。       
 
 3.临床研究:据报道,以大枣10枚,煎汤服食,1日3次,治疗5例过敏性紫癜,获得良好(新中医,1986,6:26);以大枣、红糖各50g,水煎,喝汤食枣,每日1剂,治疗脾胃虚寒型泻痢有效(中西医结合杂志,1990,9:59;四川中医1987,6:17);以成熟晒干的(忌蒸煮)大枣10枚、丹参片3片,空腹服,1日3次,1个月为1疗程,治疗银屑病107例,总有效率达91%(临床皮肤科杂志1988,3:159)。
 
本品还有用于治疗再生障碍性贫血、白细胞减少症、慢性萎缩性胃炎、小儿哮喘、更年期综合证等疾病的报道。       

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