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选择呼吸道疾病300例,采用随机、双盲法分为右美沙芬(dextromethorpan)治疗组及喷托维林(pentoxyverine,咳必清)对照组作比较。治疗组剂量:成人每次15毫升(含右美沙芬30毫克),每日3次口服。儿童每天0.5毫升/公斤(0.5毫升含右美沙芬1
300 cases of respiratory diseases were selected and divided into two groups: dextromethorpan group and pentoxyverine group. Treatment group dose: 15 ml each adult (including dextromethorphan 30 mg), 3 times a day orally. Children 0.5 ml / kg daily (0.5 ml with dextromethorphan