A probiotic, non-colonizing yeast species closely related to Brewer"s yeast and not related to the yeast group to which Candida belongs, Saccharomyces boulardii taken orally produces lactic acid and some B vitamins as it becomes established, During use, friendly probiotic bacteria are allowed to colonize in the GI tract making Saccharomyces boulardii particularly beneficial in balancing intestinal microbiology, It is then eliminated after supplementation is stopped, It also has been shown to support production of secretory IgA, 50 Capsules, SKU: NEW10487