已证实双歧杆菌用于调节肠道菌群平衡具有肯定作用[1] 。为探讨双歧杆菌制剂 (丽珠肠乐 ,每粒含双歧杆菌5 0 0 0万个 )对肠易激综合征 (IBS)的疗效 ,2 0 0 2年 9月至2 0 0 3年 2月 ,我们采用多中心随机双盲双模拟对照的方法 ,对 12 0例腹泻型IBS(D IBS)的患者进行治疗观察 ,现 Bifidobacteria have been confirmed for the regulation of intestinal flora balance has a positive effect [1]. To investigate the efficacy of bifidobacterial preparations (Lizhuchangle, each containing 50 million Bifidobacteria) in the treatment of irritable bowel syndrome (IBS), from September 2002 to 2003 In February, we used a multicenter, randomized, double-blind, double-dummy, placebo-controlled trial to treat 120 patients with diarrhea-type IBS (D IBS)