近年来对梨形鞭毛虫病的发病机理了解加深,并证明对宿主有损害。作者在巴西比较了4种常用药物的疗效。在治疗结束后第7、14、21天,分别以硫酸锌漂浮法检查粪便,三次均阴性作为治愈。呋喃唑酮8毫克/公斤/日,分3次,连用7天。53例中38例(71.7％)治愈。18.2％有副作用,以持续几天的中等程度胃肠不适为主,1例发生皮疹,另1例因剧烈头痛而停药。灭滴灵每次125毫克,1～5岁每天服2次, In recent years, understanding of the pathogenesis of Giardiasis has deepened and proved to be damaging to the host. The authors compared the efficacy of 4 commonly used drugs in Brazil. On the 7th, 14th and 21st days after the treatment, stools were examined by zinc sulfate floatation method, and all three times were negative as a cure. Furazolidone 8 mg / kg / day, 3 times, once every 7 days. Among 53 cases, 38 cases (71.7%) were cured. 18.2% had side effects, with moderate gastrointestinal discomfort lasting for days, rash in 1 case, and discontinuation of the other case in severe headache. Metronidazole 125 mg each time, 1 to 5 years old serving 2 times a day,