Milrinone commonly known and marketed as the drug Primacor is a medication used in patients suffering from heart failure. Milrinone is a phosphodiesterase 3 inhibitor that works to increase the heart’s contractility. Milrinone also works to vasodilate vessels which helps alleviate increased pressures (afterload) on the heart thus improving its pumping action. Milrinone has been used in those suffering from heart failure for many years.
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