Brewer's yeast is a nutritional supplement used to boost immune function, as it’s rich in B vitamins, essential amino acids and minerals.

What are its health benefits?

Brewer's yeast, which is naturally found in the saccharomyces cerevisiae fungus, comes in powder form and is added to certain foods.

Brewer's yeast’s most significant health benefit is as a source of B vitamins and protein. It helps stimulate intestinal enzymes and helps fight bacteria.

Daily brewer's yeast supplementation is believed to assist in the management of the following conditions:

Find it in these food sources

 Very few food products contain brewer's yeast. These include Marmite and Vegemite, which are usually spread on toast and crackers. 

It is more common to find brewer's yeast in its powdered form but it is also available in tablet form. You can sprinkle brewer’s yeast powder over cereal, or add it to a sauce or soup.

Recommended dietary allowance (RDA)

When you first start taking brewer's yeast, it’s recommended you start your dosage with a quarter teaspoon and double that amount every other day until your daily supplement is between one to three tablespoons.

However, if you are considering taking brewer’s yeast, first talk to your Clicks pharmacist about whether you should be taking it and the correct dosage if so. 

Possible side effects

Brewer's yeast seems safe for most people when used short-term. In some rare cases, however, its side effects can include headache, stomach discomfort, and gas.

People who are allergic or sensitive to brewer’s yeast might also experience itching and swelling.

Avoid brewer's yeast if:

  • You are pregnant or breastfeeding
  • Allergic to yeast
  • Have Crohn's disease

Brewer's yeast can change the way your body responds to blood sugar. This can be dangerous if you are on insulin or other similar medicines used to treat diabetes.

Ensure you discuss dietary supplementation with your Clicks pharmacist to avoid the potential for side effects and adverse interactions with medications.

The accuracy of this information was checked and approved by Clicks' pharmacist Waheed Abdurahman in August 2015