The Efficacy and Safety of Irbesartan 150/12.5 mg and 300/25 mg in Patients With Mild Hypertension

Inclusion Criteria: * The patient must have hypertension and uncontrolled SBP on monotherapy. * Patients who have read, signed and received a copy of the informed consent prior to any study procedures Note: Female patients must be post-menopausal for one year, surgically sterilized, or using a medically accepted method of contraception (intrauterine device, oral contraceptives, barrier method with spermicide) and must agree to use an effective method of contraception throughout the study. Exclusion Criteria: * Any history of secondary hypertension * History of hypertensive encephalopathy, stroke, or transient ischemic attack (TIA) within the past 12 months * History of myocardial infarction, percutaneous transluminal coronary revascularization, coronary artery bypass graft, and/or unstable angina pectoris within the past 6 months