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蓖麻子的用药禁忌与毒性

ว 2026-09-10 00:18:32ที่ 中医宝典(zhongyaocai360.com)เ admin

蓖麻子内服外用均可能引起中毒,须严格注意用药禁忌。本品有热毒,气味颇近巴豆,内服不可轻率,须去皮,用黄连水浸,每晨用浸水吞一粒至三四粒。孕妇禁用,脾胃虚弱、大便稀不成形者忌用。《药笼小品》指出蓖麻子外科煎膏多用之,内服不可轻率。《本草备要》记载蓖麻子形如牛蜱、黄褐有斑,盐水煮去皮研,或用油,忌铁,并提示食蓖麻者一生不得食炒豆,犯之胀死。蓖麻毒素和蓖麻油酸为主要活性成分,需严格遵医嘱使用。蓖麻子富含脂肪油,其泻下作用主要来自蓖麻油酸对肠道的刺激。使用时应注意控制剂量,一般内服2至5克,外用适量。由于其毒性较大,临床多以外用拔毒消肿为主,内服须经炮制并严格控制用量。蓖麻子全国大部分地区均有栽培,喜温暖气候,适应性较强。其种子椭圆形或卵形,表面光滑有灰白色与黑棕色相间花纹,一端有灰白色突起的种阜,质地坚实,为常用外用拔毒药。

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