500 Tablets Our Brewers Yeast Tablets are made from brewers yeast, the common name for the fungus Saccharomyces cerevisiae, which is a natural source of the B Vitamin, Thiamin.Thiamin contributes to normal energy-yielding metabolism, to the normal functioning of the nervous system and to the normal function of the heart.Brewers Yeast Tablets are commonly taken by vegetarians and vegans and are registered with The Vegan Society. Please Note: Due to ongoing label updates, labels may not match photos within this site. Dried Yeast Powder (Gluten), Anti-caking Agent (Silicon Dioxide).Allergy advice – For allergens see ingredients in bold.Free from artificial colours, flavourings and preservatives. As a supplement, take 2 tablets 3 times a day with food, preferably with a little liquid.Do not exceed the recommended intake.Do not use as a substitute for a varied diet and healthy lifestyle.