Hi, there are no specific remedies to improve breathlessness after an acute heart attack. What we should do is look for the cause of this problem and propose a targeted treatment. First, it is important to explain what it means myocardial infarction. Myocardial infarction, also known as heart attack is when a piece of the heart is destroyed. Once destroyed, that area will no longer contraction function and the rest of the heart will have to work more to address the lack of that piece. When this piece destroyed is bigger, causes larger contraction deficits, including severe heart dysfunction and can cause death of patients. Second, when there is loss of contractile function of the heart loses some of its ability to pump blood forward and liquids become accumulated in various parts of the body, especially the lungs, causing pulmonary edema. This fluid accumulation in the lungs is responsible for the sensation of breathlessness. Then, I believe the heart attack you had, may have destroyed a large area in your heart, leading to a condition known as heart failure. And there are several treatments for this problem, incuindo cardiopulmonary rehabilitation, medications and visits by multidisciplinary team. I suggest you contact your cardiologist for further information and determine which therapies are needed to solve the problem. Hope I have answered your question. If you have any further questions I will be happy to help you. Wish you good health.