<qa>  What type of hypertension will be excluded from the study?Subjects with a history of cardiovascular disease, liver disease and other medical illnesses, current active substance abuse or history of substance abuse for more than 5 years, and untreated or uncontrolled hypertension will be excluded. Individuals with persistent tardive dyskinesia will be excluded from the study. An electrocardiogram, blood pressure, pulse rate and metabolic panel including LFTs will be checked on all subjects prior to participation in the study. 