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Saccharomyces boulardii is a yeast studied for its benefits for the digestive system. It is a variation on the strain Saccharomyces cervisiae. This yeast has been used for over 30 years as a treatment for diarrhea.
Candida albicans is a fungus that naturally grows in the human body, but if its numbers become too large it can cause gastrointestinal infections. Saccharomyces boulardii was tested for its ability to counterbalance Candida albicans and was found to diminish the activity of the harmful fungus.The ability of Saccharomyces boulardii to reduce antibiotic-associated diarrhea (AAD) was tested in a human double-blind, placebo-controlled study in 1995. In the group receiving Saccharomyces boulardii, 7 of 97 (7.2%) of the patients experienced diarrhea, whereas 14 of 96 (14.6%) of the placebo group experienced diarrhea.
The antagonistic effect of Saccharomyces boulardii on Candida albicans filamentation, adhesion and biofilm formation.
Krasowska A, Murzyn A, Dyjankiewicz A, Łukaszewicz M, Dziadkowiec D., FEMS yeast research, 2009
Prevention of beta-lactam-associated diarrhea by Saccharomyces boulardii compared with placebo.
McFarland LV, Surawicz CM, Greenberg RN, Elmer GW, Moyer KA, Melcher SA, Bowen KE, Cox JL., The American Journal of Gastoenterology, 1995