Key Message
Evidence suggests that compared with placebo there may be improvement in abdominal pain with trimebutine or pinaverium treatment for adult patients with irritable bowel syndrome (IBS), however results were not always statistically significant. Findings from single RCTs suggest improvement in stool consistency and frequency with trimebutine or pinaverium treatment. Adverse effects with trimebutine or pinavarium appeared to be few, however not many studies reported on adverse effects. No evidence-based guidelines were identified for the use of trimebutine and pinaverium for the treatment of irritable bowel syndrome.