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本实验用氨水引咳法研究了美息伪麻片对小鼠的镇咳作用及其时效关系。结果表明：美息伪麻片对小鼠具有明显的镇咳作用（７５０ｍｇ／ｋｇ，Ｒ值＝１９０％），其镇咳效应呈明显的剂量依赖性；与国外同类物康泰克相比两者的镇咳作用及强度相似；与单味右美沙芬相比其镇咳作用更优。
In this study, we studied the antitussive action and the time-effect relationship of Ampelopodium tenellae on mice by using ammonia water cough-inducing method. The results showed that: the United States and the United States pseudo-Ma tablets have obvious antitussive effect on mice (750mg / kg, R value = 190%), the antitussive effect was significantly dose-dependent; compared with similar foreign Contac Antitussive effect and intensity similar to the single flavor dextromethorphan better antitussive effect.