Methylene Blue, methylthionine chloride or 3,7-bis(dimethylamino)phenothiazin-5-ium chloride is a chemical compound used as a dye and medication for Gram's stain, Wright stain[?], and the treatment of metoxyhemoglobinemia.
... Canadian Charter contains a provision, called the notwithstanding clause, by which some guarantees can be overridden through a legislative enactment limited to five years, ...