Overview Intravenous Allopurinol in Heart Failure Status: Completed Trial end date: 2010-12-01 Target enrollment: Participant gender: Summary This study tests the hypothesis that allopurinol, a xanthine oxidase inhibitor, improves heart metabolism in patients with heart failure. Phase: Phase 2 Details Lead Sponsor: Johns Hopkins UniversityCollaborator: National Heart, Lung, and Blood Institute (NHLBI)Treatments: Allopurinol