双根健肺饮由白茅根、芦根、甘草、茯苓、百合花、菊花、梨汁等药物组成 ,具有清热生津、祛痰止渴之功效。我们曾对其毒性进行研究 ,结果显示 :受试物对两种性别小鼠的急性毒性 LD50 均大于 1 0 g/kg体重。根据毒性分级 ,双根健肺饮属无毒。为研究其抗突变作用 ,我院又进行了小 Shuangjian Jianfeiyin consists of Rhizoma Imperatae, Reed Root, Liquorice, Poria, Lily, Chrysanthemum, Pear Juice and other drugs, which have the effect of clearing heat, producing fluid, and suppressing thirst. We have studied its toxicity. The results show that the acute toxicity LD50 of the test substance to mice of both sexes is greater than 10 g/kg body weight. According to the toxicity classification, Shuangjian Jianfeiyin is non-toxic. In order to study its anti-mutagenic effect, our hospital conducted another