First-Line Antihypertensive Medications for Adults with Hypertension

Initial Medication Selection

The American College of Cardiology recommends thiazide diuretics, calcium channel blockers, angiotensin-converting enzyme inhibitors, or angiotensin receptor blockers as first-line antihypertensive medications for adults with hypertension, with strong evidence for reducing cardiovascular events and mortality in older adults 1, 2
The American Heart Association suggests that calcium channel blockers, particularly dihydropyridines like amlodipine, are equally effective first-line options, especially for older patients 1, 2
The International Society of Hypertension guidelines recommend ACE inhibitors or ARBs as appropriate first-line options, with ARBs potentially being better tolerated due to lower incidence of cough 1, 2
The American College of Cardiology states that beta-blockers are not recommended as first-line therapy unless the patient has specific comorbidities such as coronary artery disease or heart failure 3, 2

The International Society of Hypertension guidelines suggest that dihydropyridine CCBs or thiazide diuretics may be more effective as initial therapy for patients over 60 years of age 1, 4
European guidelines recommend that drug treatment for elderly patients with systolic-diastolic or isolated systolic hypertension can be initiated with thiazide diuretics, calcium antagonists, ACE inhibitors, or ARBs 5
Initial doses and subsequent dose titration should be more gradual in older patients due to increased risk of adverse effects 5

For white patients, ACE inhibitors and ARBs have shown good efficacy, while some evidence suggests they may be less effective in Black patients 2
Dihydropyridine CCBs have demonstrated particular efficacy in isolated systolic hypertension, which is common in older adults 1, 4

The American College of Cardiology recommends starting with a single agent at a lower dose: thiazide diuretic, CCB, ACEI, or ARB 1, 2
If blood pressure is not controlled within 2-4 weeks, either increase the dose of the initial medication or add a second agent from a different class 6, 1
Effective combinations for combination therapy include ACEI/ARB + CCB, ACEI/ARB + thiazide diuretic, and CCB + thiazide diuretic 4, 1

The American Heart Association recommends monitoring blood pressure control, aiming for a target of <130/80 mmHg if tolerated 1, 2
For elderly patients, blood pressure should be measured in both sitting and standing positions to assess for orthostatic hypotension 5
Follow up within 2-4 weeks after medication changes to assess efficacy and adverse effects 1, 4
Monitor for electrolyte abnormalities, particularly with diuretic therapy 7, 1

Avoid rapid dose escalation in elderly patients, which can increase risk of adverse effects 5
Don't use beta-blockers as first-line therapy unless specific indications exist (coronary artery disease, heart failure) 3, 2
Don't ignore standing blood pressure measurements in elderly patients due to increased risk of orthostatic hypotension 5
Avoid discontinuing effective and well-tolerated therapy when a patient reaches advanced age 5

The American College of Cardiology recommends thiazide-type diuretics, particularly chlorthalidone, as the optimal first-line choice for treating hypertension in older adults, based on the largest head-to-head comparison showing superiority over calcium channel blockers and ACE inhibitors in preventing heart failure 8, 9
Chlorthalidone demonstrated superiority over lisinopril in preventing stroke and over amlodipine in preventing heart failure in older hypertensive patients 8, 9
The American College of Cardiology and American Heart Association guidelines specifically recommend thiazide diuretics, especially chlorthalidone, as preferred first-line therapy for most adults due to their efficacy in cardiovascular event reduction 10

Dihydropyridine calcium channel blockers, particularly amlodipine, are equally appropriate as first-line therapy and may be preferred if thiazides are not tolerated, with evidence showing they are as effective as diuretics for reducing all cardiovascular events except heart failure 8, 9
The American College of Cardiology recommends dihydropyridine calcium channel blockers as a suitable alternative to thiazide diuretics for first-line treatment of hypertension in older adults 8, 9

ACE inhibitors or ARBs are reasonable alternatives but were less effective than thiazide diuretics in preventing stroke and less effective than CCBs in preventing heart failure in head-to-head trials 8, 9
Beta-blockers should not be used as first-line therapy unless specific comorbidities exist, as they are significantly less effective than diuretics for stroke prevention and cardiovascular events in older adults 8, 9
Alpha-blockers are not recommended as first-line therapy because they are less effective for CVD prevention than thiazide diuretics 8