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Freebase(0.00 / 0 votes)Rate this definition: Diltiazem. Diltiazem is a nondihydropyridine member of the class of drugs known as calcium channel blockers, used in the treatment of hypertension, angina pectoris, and some types of arrhythmia. It is also an effective preventive medication for migraine. It is a class 3 antianginal drug, and a class IV antiarrhythmic.
What is diltiazem (Cardizem, Cardizem CD, Cardizem LA, Cartia XT, Dilacor XR, Dilt-CD, Diltia XT, Diltiazem Hydrochloride CD, Diltiazem Hydrochloride SR, Diltiazem Hydrochloride XR, Diltiazem Hydrochloride XT, Dilt-XR, Diltzac, Taztia XT, Tiazac)? Diltiazem is in a group of drugs called calcium channel blockers. It works by relaxing the muscles of your heart and blood vessels. Diltiazem is used to treat hypertension (high blood pressure), angina (chest pain), and certain heart rhythm disorders. Diltiazem may also be used for purposes not listed in this medication guide. turquoise, capsule, imprinted with Cardizem CD 120 mg. blue/turquoise, capsule, imprinted with Cardizem CD 180 mg.