Overview LAAS (Losartan Anti-Atherosclerosis Study)(0954-330)(COMPLETED) Status: Completed Trial end date: 2009-09-01 Target enrollment: Participant gender: Summary The primary objective of this study is to evaluate efficacy, arterial stiffness measured by Pulse Wave Velocity (PWV) of Losartan potassium group compared to Carvedilol group after 24 weeks of treatment in patients with the essential hypertension. Phase: Phase 4 Details Lead Sponsor: Merck Sharp & Dohme Corp.Treatments: CarvedilolHydrochlorothiazideLosartan