Optibac probiotics saccharomyces boulardii formerly known as for bowel calm is a supplement containing a highly researched microorganism offering you a natural option which can be safely taken alongside medicines or other supplements for diarrhoea ibs or candida saccharomyces boulardii is a unique and natural microorganism which is extensively documented and proven to survive the stomach acidity and bile salts to reach the gut alive this high quality supplement from optibac probioti