This is an open, non-interventional, non-comparative study. Therefore, there is no control group, randomization, or blinding involved. The target subject population is hypertensive patients who are being treated with eprosartan under standard clinical conditions and the locally approved Summary of Product Characteristics (SmPCs). Treatment selection is independent of the study conduct according to the local requirements of the Health Authorities for the definition of non-interventional studies being conducted in Greece. Therefore, the inclusion/exclusion criteria of this study follow the clinical decision of the participating physician, when prescribing the study medication(s) under standard clinical practice. The study plans to enroll 600 patients from 100 participating centers (hospitals and private physicians). This number includes an additional 25% cushion compared to the required sample size to ensure that sufficient data is collected for the subsequent statistical analysis. The study has been designed to be non-interventional and subsequently follows the per center standard practice of treatment, medical care and visits. As a result a rigid visit schedule could not be imposed. However, when taking into account the overall local standard practice, an overview of the visit schedule is indicated per subject: