黄根(Primatomeris tetradra)是茜草科植物三角瓣花的根皮,具有祛痰生新,强化筋骨的性能,民间用其治疗肝炎与再生障碍性贫血等。在防治矽肺药物的筛选中发现,黄根对实验性矽肺有明显抑制作用,经临床验证有一定疗效。有材料指出,黄根对矽肺病人确有镇咳、祛痰、平喘、改善症状和增强抗病能力之效。通过实验观察证实黄根确有祛痰、平喘作用。现予报道如下: 一、祛痰作用按文献方法进行实验,小鼠随机分组,共3组,每组20只。一组以生理盐水为对照,其余两组分别为远志组和黄根组。各组一律用灌胃法给药,并在腹腔注射0.5%酚红0.2毫升/10克体重后半小时检测小鼠气管洗出液中酚红浓度(微克/毫升), Primormeris tetradra is the root bark of the flower of Trifolium pratense, and it has a new aphid to strengthen the bones. The folk use it to treat hepatitis and aplastic anemia. In the screening of drugs for preventing and curing silicosis, it was found that yellow root has a significant inhibitory effect on experimental silicosis and has been clinically proven to have a certain effect. Some sources pointed out that HuangGen does have antitussive, expectorant, anti-asthma, improved symptoms, and enhanced resistance to silicosis patients. Through experimental observation, it was confirmed that the yellow root does have phlegm and asthma effects. Now reported as follows: First, the role of limulus According to the literature method experiments, mice were randomly divided into groups of 3 groups of 20 each. One group took normal saline as the control, and the other two groups were Polygalaceae and Huanggen. Each group was administered by intragastric administration and the phenol red concentration (micrograms/ml) in the tracheal washings of mice was measured half an hour after intraperitoneal injection of 0.5% phenol red 0.2 ml/10 g body weight.