Hemodynamic Effects of Aliskiren Compared to Captopril on the Kidney in Healthy Volunteers on a Low- and High- Sodium Diet

Inclusion Criteria: * Healthy male and female subjects age 18 to 75 years of age included * Strictly adhere to provided diet. Exclusion Criteria: * Symptomatic low blood pressure * Prescription medications, including those for blood pressure control, birth control pills, and any other medication that could affect kidney function * Over-the-counter medication 2 weeks before study start * Clinically significant heart abnormalities. * Previous history of allergy to the study drug or drugs similar to the study drug. * Any surgical or medical condition which might significantly alter the action of a drug (for example, absorption, distribution, metabolism or excretion) or which may jeopardize the subject in case of participation in the study. Other protocol-defined inclusion/exclusion criteria apply