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Diltiazem is in a group of drugs called calcium channel blockers. It works by relaxing the
muscles of your heart and blood vessels.
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Labetalol is in a group of drugs called beta-blockers. Beta-blockers affect the heart and
circulation (blood flow through arteries and veins).
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Metoprolol is in a group of drugs called beta-blockers. Beta-blockers affect the heart and
circulation (blood flow through arteries and veins).
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Nifedipine is in a class of drugs called calcium channel blockers. Nifedipine relaxes (widens)
your blood vessels (veins and arteries), which makes it easier for the heart to pump and reduces its
workload.
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Nitroprusside is a vasodilator that works by relaxing the muscles in your blood vessels to
help them dilate (widen). This lowers blood pressure and allows blood to flow more easily
through your veins and arteries.
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Propranolol is in a group of drugs called beta-blockers. Beta-blockers affect the heart and
circulation (blood flow through arteries and veins).
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Propranolol is classified as a beta blocker. It is sold in the United States under the brand name Inderal.
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Verapamil is in a class of drugs called calcium channel blockers. Verapamil relaxes (widens)
blood vessels (veins and arteries), which makes it easier for the heart to pump and reduces its
workload.
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