Brewer’s yeast is a rich source of minerals — particularly chromium, an essential trace mineral that helps the body maintain normal blood sugar levels; selenium; protein; and the B-complex vitamins.
Brewer’s yeast is often used as a source of B-complex vitamins, chromium, and selenium. The B-complex vitamins in brewer’s yeast include B1 (thiamine), B2 (riboflavin), B3 (niacin), B5 (pantothenic acid), B6 (pyridoxine), B9 (folic acid), and H or B7 (biotin). These vitamins help break down carbohydrates, fats, and proteins, which provide the body with energy. They also support the nervous system, help maintain the muscles used for digestion, and keep skin, hair, eyes, mouth, and liver healthy.
Brewer’s yeast does not contain vitamin B12, an essential vitamin found in meat and dairy products. Vegetarians sometimes take brewer’s yeast mistakenly believing that it provides B12, which can be lacking in their diet.