Saccharomyces boulardii and gut

What 2 graded rows on saccharomyces boulardii agree on for gut, and where they differ. Counted side by side, never averaged.

Consensus finder Rows from the Saccharomyces boulardii page, reviewed Oct 21, 2026 How it decides

What the rows agree on

Each block and row is one graded row from the Saccharomyces boulardii page, with its PubMed record.

Supplement

Saccharomyces boulardii Choose another

2 rows · 9,809 people

They agree: both rows found an improvement.

No difference

Improved

Each block is one evidence row, sized by how many people it enrolled, with its grade inside.

From the rows

The best-graded row, grade A, is a meta-analysis of 4,780 people (2015) and found an improvement.

The rows run from 4,780 to 5,029 people, published from 2010 to 2015: 2 pooled reviews and 0 single studies.

2 improved

Grade AAntibiotic-associated diarrhea · Improved
Meta-analysis · n 4,780 · 2015 · Children and adults taking antibiotics, 21 randomized trials
Varied across trials · During antibiotic treatment
Risk fell from 18.7% to 8.5% (RR 0.47, 95% CI 0.38–0.57; NNT 10); in children from 20.9% to 8.8%, in adults from 17.4% to 8.2%.
Row on the Saccharomyces boulardii page · PubMed 26216624 (opens PubMed)
Grade BSeveral diarrhea types in adults · Improved
Meta-analysis · n 5,029 · 2010 · Adults in 27 placebo-controlled trials
Varied across trials · Varied across trials
S. boulardii was effective in 84% of 31 treatment arms; for antibiotic-associated diarrhea the pooled RR was 0.47.
Row on the Saccharomyces boulardii page · PubMed 20458757 (opens PubMed)