To compare the effect of losartan vs amlodipine-based antihypertensive therapy on atherosclerotic inflammatory markers and cerebrovascular regulation in Ischemic stroke patients.

Inclusion Criteria:

• Patient With Tia Or Ischemic Stroke (Event Has Occurred More Thaan 4 Weeks But Less Than 24 Weeks, And Modified Rankin'S Scale, Mrs<=3) With Mild To Moderate Hypertension
• Patient Has No Other Active Medical Problem, Which Might Of Itself Or By This Treatment Significantly Affect The Patient's Blood Pressure
• The Blood Level Of Hscrp>0.2 Ng/Dl By Two Measurements Performed Respectively One-Week Apart

Exclusion Criteria:

• Patients With Cardiac Arrhythmia
• Diabetes Mellitus
• Patient With Other Active Inflammatory Diseases Such As Rheumatoid Disease, Fever And Systemic Infection Which Will Confound The Level Of Serum CRP
• Patients With Known Intolerance, Contraindication Or Hypersensitivity To Losartan, Amlodipine and Hydrochlorothiazide
• Patient With Myocardial Infarction Within The Recent Three Months
• Anatomy Abnormality Which Results In Poor Bilateral Temporal Acoustic Windows Which Prevent TCD Procedure
• Patient Who Requires Continuous Medication With Alpha Blocking Agents
• Concurrent Usage Of Acei
• Poor Mental Function Or Any Other Reason To Expect Difficulty In Meeting The Requirements Of The Study
• Concurrent Treatment With Other Lipid-Lowering Drug
• Childbearing Potential Women Not Undergoing Adequate Contraceptive Control