Faex medicinalis, medicinal yeast, Saccharomyces carlsbergensis, Saccharomyces uvarum,
Brewer's yeast is made from different yeast (Saccharomyces) species. It’s "harvested"
during the beer-brewing process. It can also be grown in a nutrient broth for improved
yield. This can also change its mineral content.
It’s a good source of protein. Protein makes up 52% of its weight. It’s also a good
source of B-complex vitamins. The mineral content of brewer's yeast can be controlled by adding minerals
to the solution in which the yeast is grown. Adding chromium increases the chromium content of the yeast. Adding selenium increases its selenium content.
Medically valid uses
Domesticated yeasts have been used for centuries. They’ve been used to raise bread,
brew beer, and make wine and alcoholic beverages. Brewer's yeast has been used as
a nutritive supplement for B vitamins. More recently, it’s been used as a supplement
for minerals. These include chromium and selenium.
One study showed that brewer’s yeast improved acne.
Please note that this section reports on claims that have not yet been substantiated
through scientific studies.
Yeast may help treat eczema, gout, infectious diarrhea, and some heart problems. It
may also play a role in lowering cholesterol and boosting the immune system. It may
also improve physical and mental health. Brewer’s yeast may also help control diabetes.
It does this by aiding in sugar metabolism (yeast with a high chromium content only) and reducing appetite. It also reduces the side effects of contaminants
The suggested dosage varies.
Women who are pregnant or breastfeeding should ask their healthcare providers before
taking any dietary supplements.
Side effects, toxicity, and interactions
Brewer’s yeast may cause flatulence. If you’re prone to migraines, it may cause migraines.
Brewer’s yeast may interact with medicines to treat depression called monoamine oxidase
inhibitors (MAOIs). People with gout or Crohn's disease should not take brewer’s yeast.
There are differences between brewer's yeast, baker's yeast, nutritional yeast, and
torula yeast. Brewer's yeast and nutritional yeast have many of the same nutrients.