Verapamil is indicated to treat hypertension and other conditions related to heart disease. Learn about side effects, drug interactions, dosages, warnings, and more. Verapamil is a calcium channel blocker. It works by affecting the movement of calcium into the cells of the heart and blood vessels. As a result, verapamil relaxes blood vessels and increases the supply of blood and oxygen to the heart while reducing its workload. This medicine is available only with your doctor's prescription. Verapamil is a calcium channel blocker that widens your blood vessels and relaxes your heart muscle. This improves blood flow to your heart and helps it pump. Verapamil reference guide for safe and effective use from the American Society of Health-System Pharmacists (AHFS DI). Verapamil is used to treat hypertension (high blood pressure), angina (chest pain), and certain heart rhythm disorders. Includes verapamil side effects, interactions and indications. Find patient medical information for Verapamil (Calan, Verelan, others) on WebMD including its uses, side effects and safety, interactions, pictures, warnings, and user ratings Verapamil, a non-dihydropyridine calcium channel blocker, plays a central role in the management of hypertension, angina, and supraventricular arrhythmias, and is also used off-label for conditions such as cluster headaches and hypertrophic cardiomyopathy. Verapamil’s dual actions on vascular smooth muscle relaxation and atrioventricular nodal conduction provide therapeutic benefit but. View verapamil hydrochloride information, including dose, uses, side-effects, pregnancy, breast feeding, contra-indications and drug action. Verapamil, sold under various trade names, [1] is a calcium channel blocker medication used for the treatment of high blood pressure, angina (chest pain from not enough blood flow to the heart), and supraventricular tachycardia. [9] It may also be used for the prevention of migraines and cluster headaches. [10][11] It is given by mouth or by injection into a vein. [9] Common side effects. Verapamil is a non-dihydropyridine calcium channel blocker. It's used to treat high blood pressure, arrhythmias, and chest pain (or angina) in adults. Verapamil works by slowing your heart rate and relaxing your blood vessels. This medication is taken by mouth typically about 3 to 4 times per day. Side effects can include constipation, dizziness, and nausea.