(1) Objectives: This study proposes an available and inexpensive method to reduce disabilities resulting from acute ischemic stroke which has a high prevalence among the general population. (2). Design: The present study was a double-blind clinical trial. (3) Setting and conduct: After explaining the process and obtaining informed consent, patients referred to Ahwaz Golstan hospital with ischemic stroke in the middle cerebral artery were randomly placed in drug receiver (magnesium sulfate) and placebo groups.(4) Patients included were between 45 to 75 years old, had experienced ischemic stroke less within the past 24 hours, and had neural symptoms. In addition, they had no evidence of a brain hemorrhage in primary brain CT scan, and no prior chronic renal failure, heart block,
respiratory failure, or acute metabolic disorder. (5) Intervention: In the drug receiver group, in addition to main antiplatelet treatment (aspirin), for 5 days, 4 gram magnesium sulfate in 200 cc normal saline was infused, intravenously (loading dose). Then, 16 gr in 800 cc normal saline were infused every 24 hours. In the placebo group, for 5 days, 800 cc normal saline was infused intravenously every 24 hours. (6) Main outcome measures (variables): In addition to the first visit, patients were visited at the end of the first and third month. In each case, mNIHS, mRankin scale scores, and death rates were recorded. Finally, we compared disability resulting from acute ischemic
stroke (first day, first month, and third month) using above criteria.