Saccharomyces boulardii
S. boulardii / Florastor · Gut
A probiotic yeast, not a bacterium, with the best evidence of any probiotic for antibiotic and traveler's diarrhea.
What the evidence says
Meta-analyses show fewer antibiotic-associated diarrhea cases; it survives antibiotics because it is a yeast.
What studies used
Trials commonly use 250-500 mg (5-10 billion CFU) once or twice daily.. During and after a course of antibiotics; before and during travel..
Reported from published studies and product labelling — a record of what was used in research, not a recommendation. What is right for you is a conversation with a clinician.
Watch out for
- Fungal infection risk with central lines or severe immune suppression
- Yeast allergy
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