Energy Booster GMP - Good Manufacturing Practice Product 7½ Grain - 500 mg Healthy Blood Sugar Level Dietary Supplement Brewer's yeast is natural source of protein, several B-vitamins and minerals. It is produced by cultivation of Saccharomyces cerevisiae on malted barley in the production of beer. After fermentation, the yeast is separated from the beer, roller dried and debittered. It may be useful in stress-related disorders such as anxiety and fatigue. Brewer's yeast may help to balance blood sugar levels and reduce the symptoms of hypoglycemia such as irritability, dizziness and nausea. Brewer's yeast is a general body tonic and nutrient dense food for all ages. Sugar healthy sugar metabolism. Natural source of protein and several B-vitamins.