Myocardial infarction is simply due to decreased supply of oxygen and blood to the particular tissue of heart which ultimately leads to the death of tissue. Naturally heart is quite stable in its involuntary action due to balance between oxygen supply and oxygen demand of the cardiac muscle. when this balance is disturbed by the clot formation(atherosclerosis) in coronary artery or increased demand of oxygen due to increased heart rate then clinical situation arises as tightening of chest,laboured breathing, sweating and radiating pain originating form chest and terminating to left arm and jaws as well. A male of 55 years was hospitalized in one of the most well reputed hospital of Federal area of Pakistan. The patients was nimble due to cold sweating, sever radiating left sided chest pain and was in the state of fear and apprehension. As an acute case of M.I, patient was initially treated with thrombolytic agent, Streptokinase injection 1.5 MIU through I.V infusion in one hour, tab lowplat (Clopidogrel), tab Loprin (asprin), tab Lasix (Diuretic) and tab digoxin 0.25 mg for limited days. Urine and blood samples were collected to investigate the cause and mitigate the worst clinical situation. Laboratory finding showed normal results and controlled lipid profile. Most important cardiac enzymes were in normal function .After the six days of careful monitoring, patient was discharged by prescribing tab loprin75 mg,tab lowplat 75 mg tab Lasix 40 mg,tab digoxin 0.25 mg and with precautionary measurements regarding diet control to prevent another incidence.Inview to provide aggressive therapy to save life in emergency situation, rational use of medicinal agents was neglected and prescription errors have been identified which can further worse the situation.