The purpose of this study was to contrast the efficacy and safety of 3 dose levels of nebivolol vs. placebo, when added to a patient's existing antihypertensive medication(s) for 3 months, in patients with mild to moderate hypertension

Following a washout of any previous beta-blocker medication, if applicable, supine, sitting, and standing cuff blood pressure and pulse rate, 24-hour ambulatory blood pressure monitoring (ABPM), ECG, laboratory assessments and genomics testing were performed before randomization. Patients were randomized to receive placebo or nebivolol once daily in the morning together with their curently prescribed antihypertensive therapy. Patients had four scheduled clinical visits during the study, following the screening visit.

Inclusion Criteria:

• Average sitting diastolic blood pressure (DBP) greater then or equal to 90 mmHg and less then or equal to 109 mmHg at screening and baseline, in patients on background antihypertensive therapy taking at least one and no more than two of either ACE inhibitor, ARB, or diuretic.

Exclusion Criteria:

• Recent myocardial infarction or stroke
• Contraindications to beta-blocker therapy