Observational Cohort Study Evaluating the Effectiveness of an Educational Program (NGAYDAUTIEN) in Combination With Perindopril and Amlodipine Single-Pill Combination in Hypertensive Patients naïve of Antihypertensive Treatments.

Inclusion Criteria: 1. Aged of at least 18 years (without upper limit of age) 2. Diagnosis of grade 1 or grade 2 hypertension 3. Naïve of treatment: * newly diagnosed hypertension and without treatment with antihypertensive effect for at least 3 months * previously diagnosed but without treatment with antihypertensive effect for at least 3 months 4. Patients follow-up within the scope of the current medical practice and in the same health centre during the 6-month period Exclusion Criteria: 1. Previously attended to the Ngay Dau Tien educational program for HBP management 2. Plan to be hospitalized for other medical conditions during the next 6 months 3. Plan to move/relocate during 6-month follow-up 4. Have a severe disease (i.e. cirrhosis, end-stage renal disease …) 5. Are unlikely to cooperate in the study 6. Arm 1: patient having contra-indication to take Viacoram® according to SmPC 7. Arm 2: patient showing interest in attending NDT educational program.