Perindopril Amlodipine for the Treatment of Hypertension

Inclusion Criteria: * Essential hypertension * For female subjects, a negative serum pregnancy test * Ability to provide written informed consent Exclusion Criteria: * Night shift workers whose work hours include midnight to 4:00 a.m. * Secondary hypertension * An arm size that precludes the use of the digital blood pressure monitor cuff (arm size \> 42 cm) * Renal dysfunction, severe renal impairment, bilateral renal artery stenosis, renal artery stenosis in a solitary kidney, subjects with only 1 kidney, or post-renal transplant subjects * Female subjects who are pregnant, planning to become pregnant * History of malignancy within 5 years * Primary aldosteronism * Heart failure (NYHA functional class 3-4), hypertrophic obstructive cardiomyopathy, or hemodynamically relevant stenosis of the aortic or mitral valve * Significant cardiac arrhythmias, MI, stroke, CABG, PTCA, unstable angina * Known hypersensitivity to any component of the study drugs Other protocol-defined inclusion/exclusion criteria may apply