Omniscan Injection is the formulation of the gadolinium complex of diethylenetriamine pentaacetic acid bismethylamide, an injectable, nonionic extracellular enhancing agent for magnetic resonance imaging, administered by intravenous injection. Provided as a sterile, clear to slightly yellow, aqueous solution. Each mL contains 287 mg gadodiamide, 12 mg caldiamide sodium, and water for injection.