Nitro-Dur functions primarily as a prophylactic intervention, not intended for immediate relief of acute angina attacks but rather for the prevention of these episodes through continuous administration of nitroglycerin. This medication belongs to the class of drugs known as nitrates which help by dilating blood vessels and increasing blood flow to the heart muscle, thus reducing its workload and oxygen demand
The centerpiece of Nitro-Dur therapy is nitroglycerin, a potent vasodilator. The main mechanism of action involves relaxation of vascular smooth muscles, which results in dilation of peripheral veins and coronary arteries. This dilation reduces myocardial oxygen consumption and helps prevent the onset of chest pain associated with angina, particularly in situations where the heart’s demand for oxygen exceeds the supply.