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They cause the blood vessels to expand and relax; that, in turn, makes the blood pressure go down, and allows at least a little more blood through the coronary arteries to supply the heart muscle.
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How Do Nitrates Reduce Angina?
They cause the blood vessels to expand and relax; that, in turn, makes the blood pressure go down, and allows at least a little more blood through the coronary arteries to supply the heart muscle.