Irritable bowel syndrome
Second line
Used in irritable bowel syndrome with mixed or variable bowel pattern. Evidence is modest: the 2011 Cochrane meta-analysis showed moderate benefit over placebo for symptom relief (RR 1.32, 95% CI 1.07–1.64), with low-quality studies. International guidelines ( 2021, 2022) do not include it; it is used mostly in Spain, France, and Eastern Europe.