Dilt-XR is a medication that is prescribed to treat high blood pressure and certain types of chest pain. It is a calcium channel blocker that works by relaxing the blood vessels to allow better blood flow and reduce blood pressure. The medication comes in the form of extended-release capsules and is generally taken once a day. Potential side effects include nausea, constipation, and coughing.
Dilt-XR is part of a class of drugs called calcium channel blockers. It helps slow down the rate at which calcium moves into your heart and into the blood vessel walls. This, in turn, helps to relax the vessels, which allows better blood flow and helps to lower blood pressure. This also makes it easier for the heart to pump blood.
There are two basic types of calcium channel blockers: dihydropyridine and nondihydropyridine. The most important difference between the two types is that nondihydropyridine calcium channel blockers can slow the heart rate, while dihydropyridine calcium channel blockers do not. Dilt-XR is a nondihydropyridine calcium channel blocker, which means that it can decrease the heart rate, making it useful for certain types of irregular heart rhythms (arrhythmias).
Food and Drug Administration, Center for Drug Evaluation and Research. Electronic orange book: approved drug products with therapeutic equivalence evaluations. FDA Web site. Available at: http://www.fda.gov/cder/ob/. Accessed March 20, 2007.
Briggs GG, Freeman RK, Yaffe SJ. Drugs in Pregnancy and Lactation. 7th ed. Philadelphia (PA): Lippincott Williams & Wilkins;2005.
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