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Baibiandou (White Hyacinth Bean)---白扁豆

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Product Description

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This medicinal is the dried ripe seed of Dolichos lablab L.(Fam.Leguminosae). It is collected in autumn when the fruits have become ripe. It is dried by sunlight and used both in its raw and baked form.

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

[ Medicinal Efficacies ]: Invigorate spleen and resolve dampness; harmonize the middle and dispel summer-heat.

[ Clinical Applications ]: 1. Spleen qi deficiency syndrome     To treat anorexia, loose stool or diarrhea, due to spleen deficiency with damp stagnation, it is used in combination with Renshen, Baizhu, as in the Shenling Baizhu Powder.

2. Syndrome of sumer-heat, vomiting and diarrhea      To treat vomiting and diarrhea, due summer-heat accompanied by damp, it is used in combination with Heye and Huashi. To treat yin summer-heat syndrome, which results from enjoying the cool and excessive intake of cold food with external attack by cold and internal injury by damp, it is used in combination with Xiangru and Houpo, as in the Xiangru Powder.

[ Usage and Dosage ]: 10-15 g. Baked, it has better effect on invigorating the spleen to stop diarrhea.

白扁豆为豆科植物扁豆Dolichos lablab L.的成熟种子。主产于江苏、河南、安徽等地。秋季果实成熟时采取,晒干,生用或炒用。

       【药性】甘,微温。归脾、胃经。        【功效】补脾和中,化湿。       
 
【应用】        1.脾气虚证。本品能补气以健脾,兼能化湿,药性h温和,补而不滞,适用于脾虚湿滞,食少、便溏或泄泻。唯其“味轻气薄,单用无功,必须同补气之药共用为佳”,如参苓白术散(《和剂局方》),以本品作为人参、白术等药物的辅助。本品还可用于脾虚湿浊下注之白带过多,宜与白术、苍术、芡实等补气健脾除湿之品配伍。       
 
 2.暑湿吐泻。暑多夹湿。夏日暑湿伤中,脾胃不和,易致吐泻。本品能健脾化湿以和中,性虽偏温,但无温燥助热伤津之弊,故可用于暑湿吐泻。如《千金方》单用本品水煎服。偏于暑热夹湿者,宜与荷叶、滑石等清暑、渗湿之品配伍。若属暑月乘凉饮冷,外感于寒,内伤于湿之“阴暑”,宜配伍散寒解表,化湿和中之品,如香薷散(《和剂局方》)以之与香薷、厚朴同用。       
 
【用法用量】煎服,10~15g。炒后可使健脾止泻作用增强,故用于健脾止泻及作散剂服用时宜炒用。       
 
【古籍摘要】        1.《本草纲目》:“止泄痢,消暑,暖脾胃……”。       
 
 2.《本草新编》:“味轻气薄,单用无功,必须同补气之药共用为佳”。       
 
【现代研究】        1.化学成分:本品含碳水化合物、蛋白质、脂肪、维生素、微量元素、泛酸、酪氨酸酶、胰蛋白酶抑制物、淀粉酶抑制物、血球凝集素A、B等成分。       
 
 2.药理作用:白扁豆水煎剂对痢疾杆菌有抑制作用;其水提物有抗病毒作用,而且对食物中毒引起的呕吐、急性胃炎等有解毒作用;尚有解酒毒、河豚中毒的作用;血球凝集素B可溶于水,有抗胰蛋白酶活性;血球凝集素A不溶于水,可抑制实验动物生长,甚至引起肝区域性坏死,加热可使其毒性大减。       

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