Lifeplan Brewers Yeast tablet is a food supplement made from brewer’s yeast which is 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. It helps to enhance energy levels and strengthen the immune system. Lifeplan Brewer’s Yeast tablets are Vegan and suitable for vegetarians.