Overview A Trial to Evaluate the Safety and Efficacy of PS433540 to Treat Hypertension Status: Completed Trial end date: 2008-05-01 Target enrollment: Participant gender: Summary The purpose of the study is to see if PS433540 lowers blood pressure better than placebo and to see how safe PS433540 is compared to placebo. Phase: Phase 2 Details Lead Sponsor: Ligand PharmaceuticalsTreatments: Endothelin Receptor Antagonists