布拉酵母菌（S. boulardii）也稱布拉氏酵母菌，完整的科學名稱是Saccharomyces cerevisiae var boulardii ，是單細胞真菌，屬釀酒酵母的亞種，是一種專門針對腹瀉的酵母菌。大量研究指它能預防和減少抗生素相關腹瀉、兒童急性胃腸炎、艱難梭菌的重複感染和旅行者腹瀉，此外還有不少關於克羅恩病、慢性特發性腹瀉、腸易激綜合徵的研究。
Saccharomyces boulardii yeast probiotic PLUS immune system support
InternaCALM is a high-strength Saccharomyces boulardii probiotic yeast, with 5 billion cfu organisms per capsule, PLUS olive leaf extract, vitamin D3 and biotin.
Saccharomyces boulardii is a unique, non-pathogenic and tropical yeast (fungus). Unlike most probiotics which are bacteria based, Saccharomyces boulardii is a yeast - a hardy, acid-resistant, temperature-tolerant micro-organism that is not affected by antibacterial agents or antibiotics.
It differs greatly from other better-known probiotic species, such as acidophilus and bifidobacterium strains for example. What's more, although it is in the same genus as Saccharomyces cerevisiae (bakers, brewers or dietary yeast), Saccharomyces boulardii is not linked to the Candida species (Candida albicans, tropicalas, etc.), Crohns disease or any other disease.
Together these ingredients offer gastrointestinal support, as well as support for the immune system, inflammation response, mucous membranes and more.