Abstract: A method for separating and purifying the active hematinic species present in iron-saccharidic complexes including sodium ferric gluconate complex in sucrose, ferric hydroxide-sucrose complex and ferric saccharate complex and others of similar form and function, based on separation of the iron-saccharidic complex from one or more excipients and, preferably, lyophilization. Separation of the iron-saccharidic complex permits its analytical quantification; further concentration or purification as a new and useful product; preparation of redesigned formulations for new and useful pharmaceuticals; and/or lyophilization.