SPL Set ID: 11e893d2-0183-4581-b908-c8b7302c7edb

ISOVUE-M (lopamidol Injection) formulations are stable, aqueous, sterile, and nonpyrogenic solutions for intrathecal administration. Each mL of ISOVUE-M 200 (lopamidol Injection 41%) provides 408 mg iopamidol with 1 mg tromethamine and 0.26 mg edetate calcium disodium. The solution contains approximately 0.029 mg (0.001 mEq) sodium and 200 mg organically bound iodine per mL. Each mL of ISOVUE-M 300 (lopamidol Injection 61%) provides 612 mg iopamidol with 1 mg tromethamine and 0.39 mg edetate calcium disodium. The solution contains approximately 0.043 mg (0.002 mEq) sodium and 300 mg organically bound iodine per mL. The pH of ISOVUE-M contrast media has bean adjusted to 6.5-7.5 with hydrochloric acid and/or sodium hydroxide. Pertinent physicochemical data are noted below. ISOVUE-M (lopamidol Injection) is hypertonic as compared to plasma and cerebrospinal fluid (approximately 285 and 301 mOsm/kg water, respectively). Iopamidol Parameter 41% 61% Concentration (mgl/mL) 200 300 Osmolality @ 37° C (mOsm/kg water) 413 616 Viscosity (cP) @ 37° C 2.0 4.7 @ 20° C 3.3 8.8 Specific Gravity @ 37° C 1.216 1.328 lopamidol is designated chemically as (S)-N,N’-bis[2-hydroxy-1-(hydroxymethyl)-ethyl]- 2,4,6-triiodo-5-lactamidoisophthalamide. Structural formula: Isovue-M structure