NOW Foods Brewer's Yeast Powder is a deactivated Saccharomyces cerevisiae yeast — one of the most nutrient-dense whole foods available, naturally rich in B-vitamins (particularly B1, B2, B3, B6, and B9), chromium, selenium, zinc, and a complete amino acid profile including all essential amino acids. Brewer's yeast is an exceptional natural source of chromium in its biologically active GTF (glucose tolerance factor) form, which enhances insulin sensitivity and supports healthy blood sugar metabolism. The beta-glucans naturally present in brewer's yeast also provide prebiotic and immune-modulating benefits. This versatile powder has a savory, cheesy, slightly bitter flavor similar to nutritional yeast and can be stirred into smoothies, sprinkled on food, or mixed into protein shakes. NOW Foods provides debittered brewer's yeast for a more palatable taste experience.