FLORA SB is a health promoting probiotic yeast. To be an effective probiotic, microorganisms must have certain qualities to withstand the natural defense factors of the host. These include resistance to gastrointestinal (GI) transit and the ability to thrive at human core temperatures. FLORA SB is a stomach acid-resistant probiotic, proven to survive high temperatures and transit into the intestines. As a probiotic, S. boulardii actively promotes healthy gastrointestinal flora, strengthens intestinal barrier function, and enhances immune function. This formulation of FLORA SB is freeze-dried, lactose-free, and strain-verified through genetic typing to ensure maximum efficacy.