Featured: diltiazem, Cardizem, Dilacor, Tiazac Main Article

diltiazem (Cardizem, Dilacor, Tiazac, and several others) is a medication prescribed to treat angina, high blood pressure, and abnormal heart rhythms. Diltiazem is in a class of drugs called calcium channel blockers (CCBs). Side effects, drug interactions, dosage, and precautions should be reviewed prior to taking this medication.