Table 1

Efficacy of interventions on the relief of symptoms in IBS: relative risk (RR) or OR and CI based on systematic reviews and meta-analyses

InterventionParameterRR or ORRef. #
Dietary or probiotics or antibiotics
 Bran, ispaghula and unspecified fibreAbdominal painRR 0.87 (0.76 to 1.00)21
 Low FODMAP dietAbdominal painOR 1.81 (1.13 to 2.88)24
 ProbioticsGlobal improvementSEM: −0.25 (−0.36 to −0.14)40
 Probiotics: combination of Escherichia coli and Enterococcus faecalis or E. coli aloneAbdominal painRR 1.96 (1.14 to 3.36)42 43
 Rifaximin
 Rifaximin
Global improvementOR 1.57 (1.22 to 2.01)48
BloatingOR 1.55 (1.23 to 1.96)48
Antispasmodics
 Peppermint oilGlobal improvementRR 2.23 (1.78 to 2.81)70
Antidepressants
 Antidepressant therapyGlobal improvementRR 0.66 (0.57 to 0.78)72
Abdominal painRR 0.62 (0.43 to 0.88)72
 Antidepressant therapyGlobal improvementRR 0.67 (0.58 to 0.77)73 74
 Antidepressant therapyAbdominal painRR 0.62 (0.43 to 0.88)73 74
Drugs targeting specific GI receptors
 AlosetronAbdominal pain and discomfortRR 1.30 (1.22 to 1.39)81
Overall risk difference0.13 (0.1 to 0.16)81
 AlosetronAbdominal pain and discomfortRR 1.23 (1.15 to 1.32)82
Global improvementRR 1.5 (1.40 to 1.72)82
 OndansetronAdequate relief responseRR 4.7 (2.6 to 8.5)86
 LinaclotideAdequate relief responseRR 1.95 (1.3 to 2.9)94
Abdominal painRR 1.58 (1.02 to 2.46)94
  • FODMAP, fermentable oligosaccharides, disaccharides, monosaccharides and polyol.