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Isosorbide mononitrate, sold under many brand names, is a medication used for heart-related chest pain , heart failure and esophageal spasms. [2] It can be used both to treat and to prevent heart-related chest pain; however, it is generally less preferred than beta blockers or calcium channel blockers. [2] It is taken by mouth. [2]
Isosorbide dinitrate is a medication used for heart failure, esophageal spasms, and to treat and prevent chest pain from not enough blood flow to the heart. [1] It has been found to be particularly useful in heart failure due to systolic dysfunction together with hydralazine .
The nitrate esters isosorbide dinitrate (Isordil) and isosorbide mononitrate (Imdur, Ismo, Monoket, Mononitron) are converted in the body to nitric oxide, a potent natural vasodilator. In medicine , these esters are used as a medicine for angina pectoris ( ischemic heart disease ).
Nitrates mainly differ in speed and duration of their action. Glyceryl trinitrate acts fast and short (10 to 30 minutes), while most other nitrates have a slower onset of action, but are effective for up to six hours. Molsidomine, as has been mentioned, not only acts slowly but also differs from the nitrates in exhibiting no tolerance. [2]
Molsidomine (trade names Corvasal, Corvaton and many others) is an orally active, short acting vasodilating drug used to treat angina pectoris. Molsidomine is metabolized in the liver to the active metabolite linsidomine. Linsidomine is an unstable compound that releases nitric oxide (NO) upon decay as the actual vasodilating compound. [1]
Nicorandil activates K ATP channels in the mitochondria of the myocardium, which appears to relay the cardioprotective effects, although the mechanism is still unclear. [10] In experimental animal models of the Long QT syndrome , Nicorandil normalizes the prolonged cardiac action potential duration and the QT interval .
In the medical field, nitrate-derived organic esters, such as glyceryl trinitrate, isosorbide dinitrate, and isosorbide mononitrate, are used in the prophylaxis and management of acute coronary syndrome, myocardial infarction, acute pulmonary oedema. [10] This class of drug, to which amyl nitrite also belongs, is known as nitrovasodilators.
English: Skeletal formula of isosorbide dinitrate (brand names vary, Russian brand name Cardiket ®)—an nitrovasodilator used in the treatment of angina pectoris. Created with ChemDoodle 7.0.2 and Adobe Illustrator CC.