what is isosorbide mononitrate
Isosorbide mononitrate (ISMN), an organic nitrate and the major biologically active metabolite of isosorbide dinitrate (ISDN), is a vasodilator with effects on both arteries and veins. IMDURÂ® Tablets contain 30 mg, 60 mg, or 120 mg of isosorbide mononitrate in an extended-release formulation.