Verapamil is a calcium channel blocker marketed primarily as a cardiovascular medication. It is classified as a non-dihydropyridine agent that primarily affects the heart and vascular smooth muscle. Therapeutically it is used to treat hypertension, angina, and certain types of arrhythmia. Its mechanism of action involves binding to l-type calcium channels on cardiac and smooth muscle cells, reducing calcium influx. This inhibition leads to decreased myocardial contractility and peripheral vasodilation, lowering blood pressure and cardiac workload. The net physiological effect is a reduction in heart rate and relaxation of arterial walls, producing the desired clinical outcomes.

Verapamil is a non-dihydropyridine calcium channel blocker used primarily to treat hypertension and angina. It works by binding to l-type calcium channels on vascular smooth muscle and cardiac cells. This interaction inhibits the influx of calcium ions during the depolarization phase of the action potential. As a result the cells experience relaxation of vascular smooth muscle leading to vasodilation. In the heart the drug reduces the force of myocardial contraction and slows the heart rate. The combined effect lowers systemic vascular resistance and myocardial oxygen demand. These physiological changes translate into improved blood pressure control and relief of chest pain. The medication's mechanism therefore relies on selective blockade of calcium channels that modulate vascular and cardiac contractility.

Verapamil is a calcium channel blocker used to treat high blood pressure and certain heart conditions. Common side effects include dizziness, headache, and swelling of the ankles. Some patients may experience constipation or mild nausea. In rare cases, the medication can lead to a slow heart rate or irregular rhythm. Fatigue and low blood pressure have also been reported. Long-term use may affect liver enzyme levels in some individuals.

Verapamil may cause dizziness or lightheadedness especially when standing up quickly. Headache and nausea are possible gastrointestinal side effects. Some people experience constipation or abdominal discomfort. The medication can lower blood pressure leading to faintness. It may slow the heart rate resulting in bradycardia. Swelling of the ankles or feet can occur due to fluid retention. In rare cases shortness of breath or irregular heartbeat may be observed.