Florastor/ Saccharomyces boulardii

Here’s the NYBC summary of recent research on Saccharomyces boulardii, which is available under the tradename Florastor:

Saccharomyces boulardii, sometimes abbreviated Sac. boulardii or S. boulardii, is a very well-researched probiotic, with several hundred peer-reviewed studies to its credit, many from the past two decades. It’s now the first choice among probiotics for antibiotic-associated diarrhea, C. difficile colitis, and “traveler’s diarrhea.” It can also help with irritable bowel syndrome, ulcerative colitis and Crohn’s disease. Here are some recent research highlights:

-Harvard Medical School researchers have identified specific pathways by which Saccharomyces boulardii decreases intestinal inflammatory responses; their 2006 report helps explain the broad range of protective effects that this probiotic exerts in a variety of gastrointestinal disorders. (Sougioultzis S, et al. Saccharomyces boulardii produces a soluble anti-inflammatory factor that inhibits NF-kappaB-mediated IL-8 gene expression. Biochem Biophys Res Commun. 2006 Apr 28;343(1):69-76.)

-A 2006 meta-analysis (combined analysis of multiple individual studies) found that Saccharomyces boulardii was the only probiotic studied that was effective against Clostridium difficile disease, a common form of antibiotic-associated diarrhea. (McFarland L V. Meta-analysis of probiotics for the prevention of antibiotic associated diarrhea and the treatment of Clostridium difficile disease. Am J Gastroenterol. 2006 Apr;101(4):812-22.)

-A 2008 study found that Crohn’s patients receiving Saccharomyces boulardii treatment showed significant improvements in intestinal function compared with those given a placebo. (Garcia Vilela E, et al. Influence of Saccharomyces boulardii on the intestinal permeability of patients with Crohn’s disease in remission. Scand J Gastroenterol. 2008;43(7):842-8.)

-An investigation published in 2009 found that, of a variety of probiotics, Saccharomyces boulardii was uniquely able to stimulate production of secretory IgA, the main immunoglobin found in mucus, saliva, and secretions from the intestine and the lining of the lungs, and a main component of the body’s protective mechanism against pathogens. Thus Saccharomyces boulardii may now be credited with an ability to enhance immune function in general. (Flaviano S. et al. Comparative study of Bifidobacterium animalis, Escherichia coli, Lactobacillus casei and Saccharomyces boulardii probiotic properties. Archives of Microbiology, Volume 191, Number 8 / August, 2009.)

See the NYBC entry for more details, including recommended dosages:



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