What is Saccharomyces boulardii? Simply stated, Saccharomyces boulardii (S. boulardii) is a strain of yeast that was isolated from the superfoods, mangosteen and lychee fruit, in 1923 by the French scientist, Henri Boulard (hence the name). Since it is a yeast, it is also a kind of fungus. Now, a […]