WESTOVER HILLS CLINIC Clinical Pharmacotherapy Directory
Clinical Monograph • Medically Reviewed

Norvasc

Amlodipine Besylate • Dihydropyridine Calcium Channel Blocker (CCB)

Clinical Overview: Peripheral arterial vasodilator that inhibits transmembrane influx of extracellular calcium ions into vascular smooth muscle and cardiac myocytes.

Therapeutic Indications & Pharmacodynamics

Amlodipine produces gradual peripheral arteriolar dilation, resulting in steady 24-hour reduction of systemic blood pressure and cardiac afterload without precipitous reflex adrenergic stimulation. Demonstrated clinical superiority in the ALLHAT trial for stroke and cardiovascular mortality prevention.

Clinical Indications

Essential systemic hypertension, chronic stable angina, vasospastic (Prinzmetal's) angina, angiographically documented coronary artery disease.

Contraindications & Precautions

Known hypersensitivity to dihydropyridines, severe aortic stenosis, severe hypotension.

Prescribing Profile

Available Strengths:
2.5mg, 5mg, 10mg
Elimination Half-Life:
30 to 50 hours (permits reliable once-daily dosing)
Reviewing Physician:
Dr. Caroline Hernandez, MD
Institutional Dosing Monograph