Noun
A glucoside found in licorice root (Glycyrrhiza), in monesia bark (Chrysophyllum), in the root of the walnut, etc., and extracted as a yellow, amorphous powder, of a bittersweet taste.
Source: Webster's dictionaryGlycyrrhizin is a compound in licorice that may reduce the effectiveness of certain drugs, like the immunosuppressant cyclosporine. Source: Internet