Argentum Cyanidum To purchase Argentum Cyanidum and other homeopathic remedies online, please click the button above. Remedy info unavailable. Argentum Cyanidum is available to buy through our online shop from Boiron in USA, Boiron in Canada, by clicking the red 'View Purchase Options' button. Alternative names, keywords, and common mis-spellings Arg. N, Argent, Argent. Cyanatum