Natures Aid Brewers Yeast tablets are manufactured using non debittered Brewers Yeast powder preserving the natural levels of B vitamins Saccharomyces Cerevisiae (Brewers Yeast Powder), Anticaking Agent (Silicon Dioxide). Take 2 tablets 3 times daily or as required up to a maximum of 12 daily. Best avoided by anyone taking monoamine oxidase inhibitors and people suffering from gout. 1 x Natures Aid 300mg Brewers Yeast 500 Tablets.