Diltiazem is used to prevent chest pain. It may help to increase your ability to exercise and decrease how often you may get angina attacks. Diltiazem is called a calcium channel blocker. It works by relaxing blood vessels in the body and heart and lowers the heart rate. High blood pressure may also increase the risk of heart attacks. These problems may be less likely to occur if blood pressure is controlled. Diltiazem is a calcium channel blocker. It works by affecting the movement of calcium into the cells of the heart and blood vessels.
Take this medication by mouth before meals and at bedtime as directed by your doctor, usually 3 to 4 times a day. Swallow the tablets whole. Don’t split, crush, or chew the tablets. Doing so can release all of the drugs at once, increasing the risk of side effects. Follow your doctor’s directions on how to take this medication.
Common side effects of Cardizem include:-