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Evidence-Based Supplement Research
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Lactobacillus salivarius UCC118 and Reduced Gastrointestinal Infections

Research synthesisVery low evidenceMixed effect size3 studies · 3 beneficial · 0 neutral · 0 harmful

Across 3 studies, all reported beneficial effects of Lactobacillus salivarius UCC118 on reducing gastrointestinal infections, with effect sizes ranging from small to moderate. The evidence is based on review articles and animal model data, with no human trial data available. No consistent dose, form, or population data were reported across the included studies.

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. Available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed). All studies are reviews or genomic reports, not human interventional trials; the primary evidence comes from animal models, limiting direct applicability to humans.

Generated Jun 11, 2026
3 of 3 papers
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