Clinical One-stage Controlled Study of reSistant Arterial Hypertension for the desiGning of a personAlized Approach to Therapy

Inclusion Criteria: * Signed informed consent form; * An established diagnosis of AH based on the Clinical Guidelines "Arterial hyperten-sion in adults", approved by the Scientific and Practical Council of the Ministry of Health of the Russian Federation, 2020; * Mandatory patient compliance with recommendations for lifestyle modification in accordance with the Clinical Guidelines "Arterial hypertension in adults", approved by the Scientific and Practical Council of the Ministry of Health of the Russian Federation, 2020 . * Regular administration of any two antihypertensive drugs (lisinopril, amlodipine, valsartan) in combination with indapamide for a month, possibly in fixed combinations, in stable dosages; * Fertile female patients must use proper methods of contraception throughout the study period. Exclusion Criteria: * Patient's connection with the organization or conducting of the study; * Pregnancy.