A medical trial of adult hypertensive patients without a history of stroke and myocardial infarction was performed. The patients participating in the trial were randomly assigned to two groups, one taking a fixed compound (10 mg enalapril and 0.8 mg daily). (Folic acid composition), the other group was simply taking 10 mg of enalapril daily orally. After more than 4 years of treatment, a stroke of 2.7 occurred in the fixed compound group and a stroke of 3.4 in enalapril group, that is, After taking enalapril in combination with folic acid, the risk of stroke was significantly reduced. To reach the above conclusions, the prerequisites that need to be added are:. ['Before the experiment, there was no significant difference in folate levels between the two groups of patients.', 'Enalapril can fight myocardial ischemia and reduce the scope of myocardial infarction.', 'Taking Enalapril with Folic Acid Does Not Have Any Side Effects.', 'Stroke risk tests were performed on both groups of subjects before the experiment.']