SB Floractiv 500 is a vegan formula that contains 10 billion CFU of Saccharomyces cerevisiae (Boulardii) (SB), a probiotic yeast that supports intestinal health and maintains beneficial intestinal flora. SB helps to maintain healthy immune system function and helps reduce the occurrence of symptoms of traveller’s diarrhoea. SB has also been shown to provide relief of diarrhoea in children.Always read the label and follow the directions for use. If symptoms persist, talk to your health professional. Supplements may only be of assistance if dietary intake is inadequate.