Analysis 1.1. Comparison 1 Homeopathy versus placebo, Outcome 1 Homeopathy versus placebo. . . . . . . Analysis 2.1. Comparison 2 Homeopathy versus usual care, Outcome 1 Global improvement (feeling unwell). . . . Analysis 3.1. Comparison 3 Homeopathy plus usual care versus usual care, Outcome 1 Global improvement (IBS-SSS). Analysis 3.2. Comparison 3 Homeopathy plus usual care versus usual care, Outcome 2 Quality of life. . . . . . Analysis 4.1. Comparison 4 Homeopathy plus usual care versus supportive listening plus usual care, Outcome 1 Global improvement (IBS-