May refer to either of two medications used to treat angina pectoris: isosorbide dinitrate or isosorbide mononitrate. It may also refer to other isosorbide-based medicines used as osmotic diuretics.
Isosorbide is used to prevent or treat chest pain(angina). It works by relaxing the blood vessels to the heart so the blood and oxygen supply to the heart is increased. It comes in regular, sublingual, chewable, and extended release(long-acting) capsule to be taken by mouth.