High doses of vitamin C (over one gram) may enhance the absorption of selenium. This mineral is best taken in conjunction with antioxidant supplements, such as vitamins C or E.
Se-Methyl L-Selenocysteine (SeMC) is a naturally occurring seleno-amino acid that is synthesised by plants such as garlic and broccoli. SeMC is an organoselenium compound and also more bio absorbable than other forms. Unlike selenomethionine, which is incorporated into proteins in place of methionine, SeMC is not incorporated into any proteins ... so it is fully available for the synthesis of selenium-containing enzymes, such as glutathione peroxidase.