Selenium is a trace element which was first regarded as a poison until it was shown to prevent degeneration of liver tissue. Modern lifestyles coupled with over farming has meant that in the UK we are particularly deficient with an average dietary intake of 31ugday Government recommended intake 6070ugday.p Selenium carries out its main function as part of the enzyme glutathione peroxidase. Glutathione peroxidase is an antioxidant that protects intracellular inside the cell structures