Calcium Channel Blockers for Hypertension Management

Introduction to Calcium Channel Blockers

The American College of Cardiology recommends long-acting dihydropyridine calcium channel blockers, such as amlodipine, nifedipine, and felodipine, as first-line agents for treating hypertension, along with non-dihydropyridine CCBs like diltiazem and verapamil 1, 2

Felodipine is a long-acting dihydropyridine CCB with primarily vascular effects, dosed at 5-10 mg once daily 3
Isradipine is a medium-duration dihydropyridine CCB, dosed at 2.5-10 mg twice daily 3
Nicardipine is a short-acting dihydropyridine CCB, dosed at 20-40 mg three times daily 3
Nisoldipine is a short-acting dihydropyridine CCB, dosed at 20-40 mg once daily 3
Nitrendipine is a medium-duration dihydropyridine CCB, dosed at 20 mg once or twice daily 3, 4
Diltiazem is a non-dihydropyridine CCB that affects both vascular smooth muscle and cardiac conduction, dosed at 120-360 mg once daily 3
Verapamil is a non-dihydropyridine CCB with significant effects on cardiac conduction and contractility, dosed at 120-480 mg once daily 3, 4

Dihydropyridine CCBs have more pronounced effects on vascular smooth muscle than on cardiac conduction, leading to peripheral arterial vasodilation 3
Non-dihydropyridine CCBs have more significant effects on cardiac conduction and contractility 3
CCBs are recommended as first-line agents for hypertension treatment by major guidelines, and can be used as monotherapy or in combination with other antihypertensive drugs 1, 2, 5

CCBs are often combined with ACE inhibitors or ARBs for enhanced efficacy, and can reduce the incidence of peripheral edema 6, 5
In patients with diabetes and albuminuria, ACE inhibitors or ARBs are preferred first-line, with CCBs as add-on therapy 5, 7
For resistant hypertension, a combination of a diuretic, CCB, and ACE inhibitor/ARB is recommended, with consideration of adding a mineralocorticoid receptor antagonist if needed 8
Long-acting nifedipine can be used for hypertension in pregnancy when needed 5
CCBs are effective but may be second-line to ACE inhibitors/ARBs in patients with albuminuria 5, 7
Both dihydropyridine and non-dihydropyridine CCBs are effective for patients with hypertension and stable ischemic heart disease 2

Constipation is a common side effect of verapamil 3
Avoid short-acting nifedipine for hypertension due to risk of reflex tachycardia 4
Use CCBs with caution in heart failure, particularly non-dihydropyridines 3
Verapamil and diltiazem should be avoided in patients with severe left ventricular dysfunction 3