Morning Versus Bedtime Dosing of Antihypertensive Medication
Hypertension, Blood Pressure, Drug Use

About this trial
This is an interventional treatment trial for Hypertension
Eligibility Criteria
Inclusion Criteria:
- Male or female patients aged 18-70 years old;
- Never treated for hypertension or stopped using antihypertensive drugs for at least 2 weeks;
- In the two screenings,the clinical systolic BP should be in the range of 140-159 mmHg, the diastolic BP < 100 mmHg;
- The average 24-hour systolic BP ≥130mmHg, daytime systolic BP ≥ 135 mmHg, and nighttime systolic BP ≥ 120 mmHg;
- The average of bilateral brachial-ankle pulse wave velocity ≥14m/s;
- Be willing to participate in the trial, sign the informed consent form, and be able to visit doctors by himself or herself.
Exclusion Criteria:
- Secondary hypertension;
- Concomitant obstructive sleep apnea (STOP-BANG score ≥ 5), insomnia, Parkinson's syndrome, or nocturnal polyuria and other diseases that affect nighttime BP;
- Need to work at night;
- Ambulatory BP monitoring was invalid (<70% valid readings, or <20 daytime readings or <7 nighttime readings);
- Concomitant diseases that need taking medications influencing BP;
- Coronary heart disease, myocardial infarction or stroke within recent 6 months;
- Atrial fibrillation or frequent arrhythmia;
- Abnormal liver function exemplified as an increased alanine transaminase (ALT), aspartate transaminase (AST), total bilirubin (TBL) over the double of the upper limit of normal range; abnormal renal function exemplified as a serum creatinine ≥176 µmol/L; and plasma potassium ≥5.5 mmol/L or ≤3.5mmol/L;
- Pregnant or lactating women;
- Contraindications of angiotensin II receptor blocker or calcium channel blocker;
- Other concomitant diseases which are considered not suitable to participate in the trial, such as thyroid diseases, acute infectious diseases, chronic mental diseases, tumor, etc.
Sites / Locations
- Ruijin HospitalRecruiting
Arms of the Study
Arm 1
Arm 2
Active Comparator
Experimental
The morning dosing group
The bedtime dosing group
After randomization, subjects will take alisartan 120 mg (Salubris, Shenzhen, China) once daily at 6:00-10:00. After 8 weeks of treatment, if the 24-hour ambulatory systolic BP remained ≥ 130 mmHg, alisartan will be doubled to 240mg. After 16 weeks of treatment, if the 24-hour ambulatory systolic BP remained ≥ 130 mmHg, amlodipine besylate 2.5 mg (Dawnrays, Suzhou, China) once daily will be added. The whole treatment duration will last for 24 weeks.
After randomization, subjects will take alisartan 120 mg once daily at 20:00-24:00. The follow-up plan is the same as the morning dosing group.