In addition to blood collection, a physical exam will be conducted and office systolic blood pressure (BP), diastolic blood pressure (DBP) and pulse pressure (PP) will be recorded. Patients will also be fitted with an ambulatory blood pressure monitor (ABPM) system. Patients will wear the ABPM for 24 hours at which point they will mail the monitor back to research personnel. A week later, a second ABPM baseline reading will be conducted as patients will return to the clinic to be fitted again with the ABPM. At this visit, the study drug will be dispensed and patients will be instructed to start the study medication after completing the 24- hour ABPM monitoring period. After this visit, patients will be asked to return every month till the end of the study at 6 months.