Supplements / Conditional

Saccharomyces boulardii

Good evidenceMorningConditional

Best for: Gut support

Saccharomyces boulardii is rated good evidence (tier B on our evidence scale). 5–10 billion CFU twice daily. Morning and evening.

Sources last reviewed

When and how to take Saccharomyces boulardii

Dose
5–10 billion CFU twice daily.
Timing
Morning and evening.
Review
Reassess after 2 to 4 weeks.
Forms
saccharomyces boulardii cncm i-745

What Saccharomyces boulardii is used for

  • Yeast-based probiotic with strong evidence in antibiotic-associated diarrhea and C. difficile recurrence prevention.
  • Survives antibiotics (yeast, not bacterial).

When Almavivo suggests Saccharomyces boulardii

  • If you flagged loose stools or recent antibiotics: studied for antibiotic-associated and C. difficile-associated diarrhea.

Safety checks for Saccharomyces boulardii

1 in the safety matrix

What to look for when buying Saccharomyces boulardii

  • Preferred third-party verification: Third-party tested (COA).
  • Common contamination risks: Mislabeling / identity, Microbial contamination.

Where to get it

Coming soon

We’re building a curated list of third-party-tested products for Saccharomyces boulardii. Each one will meet our quality bar (preferred certifications, contamination screens) and carry an explicit affiliate disclosure.

Read our affiliate policy →

Your experience

Stays on this device

If you’ve tried Saccharomyces boulardii, you can log how it went. This stays on your device — only you see it.

We frame these as personal experience, not medical claims. Self-reported subjective outcomes are influenced by placebo, regression to the mean, and parallel lifestyle changes. We’ll never present ratings as equivalent to RCT evidence.

Research sources for Saccharomyces boulardii

1 reviewed

Almavivo is for education only, not medical advice. Check with a doctor or pharmacist before starting a supplement, especially if you take prescription medicine, are pregnant or breastfeeding, or have a long-term health condition.