Old infarction can be treated with Tegretol, Trimetazidine, combined with Candesartan or Benadryl as prescribed by the doctor. 1. Tegretol: Tegretol has good efficacy in old infarction, which can effectively alleviate vascular inflammatory reaction, improve cardiac function and reduce the occurrence of adverse cardiovascular events. Use with caution in those with recent bleeding tendencies and those who are allergic to the drug. Visible adverse reactions include gastrointestinal bleeding, dyspnea and bradycardia. 2. Trimetazidine: Trimetazidine can be used to treat old myocardial infarction, especially in combination with heart failure. It can optimize myocardial energy metabolism and rapidly relieve the symptoms of myocardial ischemia while maintaining the survival and function of the heart. The drug should be used with caution in those who are allergic to it, those with hepatic or renal insufficiency, and women during pregnancy. Visible adverse reactions include headache, insomnia, abdominal pain, diarrhea and dyspepsia. 3. Combined use of Candesartan or Benadryl: Combined use of the above drugs with Candesartan or Benadryl has a more obvious effect on old infarction, with obvious improvement in cardiac function. Note that the drug should be used with caution in people who are allergic to the drug, and in people with bilateral renal artery stenosis, and the visible adverse effects include hypotension, dry cough, and transient deterioration of renal function. All of the above drugs should be used under the guidance of a physician, and should not be used without authorization.