Health Guide

Brewer's yeast

What is it?

Brewer's Yeast is a nutritional supplement that is used as a source of B vitamins and chromium. It is also used for loss of appetite, acne, atherosclerosis (fat deposits in arteries), and diabetes.

Other names for Brewer's Yeast include: Faex Medicinalis.

Ask your doctor, nurse, or pharmacist if you need more information about this medicine or if any information in this leaflet concerns you.

Before Using:

Tell your doctor if you

  • are taking medicine or are allergic to any medicine (prescription or over-the-counter (OTC) or dietary supplement)
  • are pregnant or plan to become pregnant while using this medicine
  • are breastfeeding
  • have any other health problems, such as high blood pressure or heart or blood vessel disease


Talk with your caregiver about how much Brewer's Yeast you should take. The amount depends on the strength of the medicine and the reason you are taking Brewer's Yeast. If you are using this medicine without instructions from your caregiver, follow the directions on the medicine bottle. Do not take more medicine or take it more often than the directions tell you to.

To store this medicine:

Keep all medicine locked up and away from children. Store medicine away from heat and direct light. Do not store your medicine in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down and not work the way it should work. Throw away medicine that is out of date or that you do not need. Never share your medicine with others.


  • Before taking Brewer's Yeast, tell your doctor if you are pregnant or breastfeeding

Side Effects:

Stop taking your medicine right away and talk to your doctor if you have any of the following side effects. Your medicine may be causing these symptoms which may mean you are allergic to it.

  • Breathing problems or tightness in your throat or chest
  • Chest pain
  • Skin hives, rash, or itchy or swollen skin

Other Side Effects:

You may have the following side effects, but this medicine may also cause other side effects. Tell your doctor if you have side effects that you think are caused by this medicine.

  • Migraine-like headaches can occur in sensitive people (1)
  • Excess gas and bloating have also been reported (1)


1. Blumenthal, Busse, Goldberg, et al: The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines, The American Botanical Council, Austin, TX; 1998.

2. Offenbacher E & Stunyer F: Beneficial effect of chromium-rich yeast on glucose tolerance and blood lipids in elderly patients. Diabetes 1980;29:919-925.

3. McCarty M: High chromium yeast for acne? Med Hypotheses 1984;14:307-310.

4. Elwood JC, Nash DT, Streeten DHP et al: Effect of high-chromium brewer's yeast on human serum lipids. J Am Coll Nutr: 1982;1:263-274.

5. Riales R: Chromium in Nutrition and Metabolism. North-Holland Biomedical Press; 1979: 199-212.

Last Updated: 7/4/2018
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