This high quality supplement from optibac probiotics offers you a natural option which can be safely taken alongside medicines or supplements for diarrhoea ibs or candidar r saccharomyces boulardii is a highly researched natural and safe yeast with different properties and actions to other yeasts optibac probiotics was the first company to introduce saccharomyces boulardii to the ukr r having an imbalance of good and bad bacteria in the gut may be associated with various digestive health