Jarrow Formulas Beta Glucan Yeast Extract supports the immune system and immune health.(1) These supplements provide 250 mg of Saccharomyces cerevisiae extract per serving, which are natural bioactive carbohydrates, with those derived from certain yeasts and fungi being known for their ability to support the immune system.(1) Jarrow Formulas Beta Glucan is a high purity extract from the cell walls of a proprietary Bakers yeast strain with a unique molecular structure.(1) This dietary supplement is IGEN non-GMO tested and is gluten-free. Adults take one capsule once a day on an empty stomach with a full glass of water or as directed by your qualified healthcare professional. Jarrow Formulas Superior Science. Smarter Formulas. (1)These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.