Nutritional Value of Brewer's Yeast

Brewer’s yeast is an inactive one-celled fungus (saccharomyces cerevisiae) and is a by-product of beer-making.

The term “nutritional yeast” is sometimes applied to brewer’s yeast, but here, we refer to the by-product of beer-making as brewer’s yeast.  Nutritional yeast can be grown on sugar beets, rather than on grain, and will have different nutrient values.

Both kinds of yeast are inactive, meaning that the live enzymes are destroyed in the heating process and the yeast will not ferment.  You cannot use brewer’s yeast to raise bread.  Rather, we use this yeast as a nutritional supplement; as such, it provides several valuable vitamins and minerals.

Brewer’s yeast is considered to be a prebiotic and probiotic useful for good digestion, as well as being rich in chromium, which is helpful for blood sugar regulation.  It is thought to strengthen the immune system.

The average adult dosage is two tablespoons daily.  Work up to that gradually as it may take time to adjust to the flavor, and you can monitor any side effects.  You can add it to food, blend it into a smoothie, or stir into water. Nutritional yeast grown on sugar beets will be gluten-free but brewer’s yeast may contain gluten.


  • Headaches
  • Stomach discomfort
  • Intestinal gas


  1. Do not use without doctor’s approval if you are taking insulin, or any other prescribed medication, but especially with meds for depression or pain.
  2. Do not use if you have a yeast infection.
  3. Consult with your doctor if you are pregnant or breastfeeding.
  4. Call your doctor if you experience allergic reactions:
    • Chest pains
    • Throat tightness
    • Breathing difficulties

There may be nutritional value not listed in the facts below, such as beta-glucans, nicotinamide riboside, ergosterol and DNA/RNA nucleotides.

Based on an adult serving size of two tablespoons:                                                                                   %Daily Value

Calories per serving, 115

Total fat per serving 0.0g

Cholesterol 0.0mg                                                      0%

Sodium 63.0mg                                                           3%

Total Carbohydrate 13.0 g                                          4%

Dietary Fiber 6.0 g                                                      24%

Protein 16g                                                                 32%


Copper 1.0mg                                                             50%

Folate 60.0 mcg                                                          15%

Iron 1.1 mg                                                                     6%

Iron     1.1mg                                                                  6%

Magnesium 32.0 mg                                                     8%

Niacin 10.0 mg                                                            50%

Pantothenic Acid 0.6 mg                                             6%

Potassium 633mg                                                       18%

Riboflavin 1.5mg                                                          90%

Selenium 63.0mcg                                                       90%

Thiamin 1.2mg                                                             80%

Vitamin B6 0.8mg                                                          6%

Vitamin B12 03mcg                                                       5%

Zinc 1.5 mg                                                                   10%