200µg dose of selenium in easy to swallow tablet form Selenium contributes to the normal function of the immune system & the maintenance of normal hair & nails Quality Assured; high quality and rigorously tested Suitable for vegetarians and vegans Holland & Barrett Selenium tablets are ideal for those looking to supplement with selenium when it is difficult to obtain through the diet. Selenium is an essential trace mineral, utilised by the body for various functions: Maintaining normal thyroid function Contributing to the normal functioning of the immune system The maintenance of normal hair and nails Protecting cells from oxidative stress Helping with normal spermatogenesis; the production of sperm