Norvasc is the brand name for amlodipine besylate, a dihydropyridine calcium channel blocker that reduces vascular resistance. It selectively inhibits the influx of calcium ions into vascular smooth muscle and cardiac myocytes, leading to arterial dilation. By widening peripheral arteries, the drug lowers systemic blood pressure and improves myocardial oxygen supply. The resulting decrease in afterload reduces the workload of the heart and alleviates symptoms of angina. Pharmacodynamically, amlodipine produces a dose-dependent relaxation of smooth muscle without significant effects on heart rate or conduction. Its long half-life allows for once-daily dosing and sustained therapeutic effect over 24 hours. Overall, the medication functions by modulating calcium-mediated vascular tone to achieve consistent antihypertensive and anti-ischemic outcomes.

Norvasc is the brand name for the drug amlodipine, a calcium channel blocker used to treat high blood pressure and certain types of angina. It works by relaxing the smooth muscle in the walls of blood vessels, which reduces vascular resistance. The medication specifically blocks the entry of calcium ions into vascular smooth muscle cells through l-type voltage-gated calcium channels. This inhibition prevents the phosphorylation of myosin light chain kinase, leading to a decrease in intracellular calcium levels. With lower calcium concentrations, the muscle cells cannot contract as forcefully, resulting in vasodilation. The resulting drop in systemic vascular resistance lowers arterial blood pressure and improves oxygen delivery to the heart. By improving coronary blood flow, amlodipine also relieves the frequency and severity of angina episodes. The drug's long half-life allows once-daily dosing and maintains steady therapeutic levels over 24 hours.

Norvasc may cause swelling of the ankles or feet as a common side effect. Headache is frequently reported among users. Dizziness can occur especially when standing up quickly. Flushing of the skin is another typical reaction. Some people experience fatigue that may affect daily activities. Rarely, mild abdominal discomfort has been observed.

Norvasc may cause swelling of the ankles or feet in some patients. It can also lead to a feeling of lightheadedness or dizziness upon standing. Headache is a frequently reported symptom especially during the initial weeks of treatment. Some individuals experience flushing or a warm sensation in the skin. Nausea or mild stomach discomfort may occur in certain cases. Fatigue or unusual tiredness can also be observed among users.