Review: probiotics reduced diarrhoea at 3 days in children and adults with proven or presumed infectious diarrhoea.

Study selection and assessment: published and unpublished randomised controlled trials (RCTs) in any language that compared specific probiotics with placebo or no probiotic in adults and children with acute diarrhoea (,14 d) that was proven or presumed to be caused by an infectious agent. 2 independent reviewers assessed the methodological quality of individual studies in terms of generation of allocation sequence, allocation concealment, blinding, and loss to follow up.