Saccharomyces

What the brand says

Saccharomyces boulardii is a specific probiotic strain that can sustain and recolonize flora in the gastrointestinal tract. S. boulardii promotes the health of the intestinal tract, helps to encourage a healthy gut flora balance, and supports a balanced intestinal response to normal internal and environmental stressors. Saccharomyces boulardii has been shown to support proper gastro intestinal function during temporary disruptions to the normal balance of gut flora.