While there's no direct, specific research on Saccharomyces boulardii for reducing flatulence (gas), here's what the available evidence suggests:

What the Research Shows

Pillser's research database includes studies on Saccharomyces boulardii and several digestive outcomes:

• Reduced symptom severity – 2 studies were found, with 1 showing beneficial effects and 1 showing neutral effects¹.
• Reduced diarrhea and diarrhea duration – This is where the strongest evidence lies, with multiple studies showing beneficial effects, particularly in children with acute gastroenteritis and adults with conditions like IBS-D or SIBO¹.
• Improved quality of life – 1 study reported beneficial effects¹.

Potential Indirect Benefit

While flatulence isn't studied as a primary outcome, improving overall gut health — including reducing diarrhea, balancing gut microbiota, and alleviating general digestive symptoms — could potentially help reduce excessive gas in some individuals. However, it's worth noting that probiotics can sometimes cause temporary bloating or gas when first introduced.

Bottom Line

There isn't strong, direct evidence that Saccharomyces boulardii specifically reduces flatulence. Its best-documented benefit is for reducing diarrhea (especially antibiotic-associated diarrhea). If your flatulence is linked to underlying digestive issues like diarrhea-predominant IBS (IBS-D) or an imbalanced gut microbiome, you might see some benefit indirectly, but it's not a guaranteed or well-studied effect for gas alone.

Would you like me to search for other supplements that have been studied specifically for flatulence or excessive gas?

Footnotes

1. Pillser research database, Saccharomyces boulardii. ↩ ↩² ↩³