Clinical Efficacy and Safety Evaluation of HCP1904-3 in Essential Hypertension Patients

Inclusion Criteria: 1. Patients over 19 years of age 2. Patients who understands the process of clinical study and voluntarily signs a peer letter 3. Visit1: A person whose blood pressure measured in visit1 corresponds to the following conditions * Blood pressure medication taken patients: 130mmHg ≤ sitSBP\<180mmHg, sitDBP\<110mmHg * Blood pressure medication free patients: 140mmHg ≤ sitSBP\<180mmHg, sitDBP\<110mmHg 4. Visit2: 140mmHg ≤ sitSBP\<180mmHg, sitDBP\<110mmHg or if patients are in high risk group: 130mmHg ≤ sitSBP \<180mmHg, sit DBP \< 110mmHg Exclusion Criteria: 1. Difference in mean value of blood pressure measured in both arms of more than 20mmHg in sitSBP or more than 10mmHg in sitDBP 2. Orthostatic hypotension with symptoms within 3months of visit 1 3. Secondary hypertensive patient or suspected to be 4. Uncontrolled diabetes mellitus(HbA1c \> 9%) or type I diabetes mellitus 5. Active gout or hyperuricemia (uric acid ≥ 9mg/dL) 6. Severe heart disease or severe neurovascular disease 7. Severe or malignant retinopathy 8. Clinically significant hematological finding 9. Severe renal diseases (eGFR\<30mL/min/1.73m2) 10. Severe hepatopathy or active hepatopathy (AST or ALT normal range ≥ 3 times) 11. Hypokalemia or Hyperkalemia(K\<3.5mmol/L or K ≥ 5.5mmol/L) 12. Hyponatremia or Hypernatremia(Na\<135mmol/L or Na ≥ 155mmol/L) 13. Hypercalcemia 14. History of malignancy tumor 15. History of autoimmune disease 16. History of alcohol or drug abuse 17. Positive to pregnancy test, nursing mother, intention on pregnancy 18. Considered by investigator as not appropriate to participate in the clinical study with othe reason