Hypertension is one of the cardiovascular diseases which is most common throughout the world. It is generally defined as an elevation of systolic and/or diastolic arterial blood pressure, which is 120/80 mm Hg in normal situation. A value of 140/90 mm is generally accepted as the upper limit of normotension. Hypertension with certain risk factors such as hypercholes- terolemia, diabetes, smoking and a family history of vascular disease pre- disposes to arteriosclerosis and consequent cardiovascular morbidity and mortality. The treatment of hypertension leads to reduced risk of hyperten- sive...