Overview Uric Acid and Hypertension in African Americans Status: Completed Trial end date: 2011-05-01 Target enrollment: Participant gender: Summary This study will test the hypothesis that the administration of a xanthine oxidase inhibitor (allopurinol) will prevent thiazide-induced hyperuricemia, which will result in better blood pressure (BP) control in African Americans. Phase: Phase 3 Details Lead Sponsor: University of FloridaTreatments: AllopurinolChlorthalidoneUric Acid