a drug used for the prevention and treatment of angina; it acts by relaxing the smooth muscle of both arteries and veins, thus causing dilatation (see vasodilator). Side-effects include headache, flushing, dizziness, and hypotension.
Isosorbide dinitrate is converted in the body to the active form of the drug, isosorbide mononitrate, which is available as a preventative oral treatment for angina.
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