Which is a dihydropyridine calcium channel blocker?

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Prepare for the Rasmussen Pharmacology Exam 3. This quiz includes multiple-choice questions with hints and explanations. Review essential pharmacological concepts and get ready for your exam!

Multiple Choice

Which is a dihydropyridine calcium channel blocker?

Explanation:
Dihydropyridine calcium channel blockers selectively target L-type calcium channels in vascular smooth muscle, causing arterial vasodilation and lowering blood pressure with relatively less effect on the heart’s conduction system. Amlodipine is a classic example of this subclass, hence it is a dihydropyridine CCB. In contrast, diltiazem and verapamil are non-dihydropyridines and tend to affect the heart more, especially AV nodal conduction. Prazosin is an alpha-1 blocker, not a calcium channel blocker. So amlodipine best fits the description.

Dihydropyridine calcium channel blockers selectively target L-type calcium channels in vascular smooth muscle, causing arterial vasodilation and lowering blood pressure with relatively less effect on the heart’s conduction system. Amlodipine is a classic example of this subclass, hence it is a dihydropyridine CCB. In contrast, diltiazem and verapamil are non-dihydropyridines and tend to affect the heart more, especially AV nodal conduction. Prazosin is an alpha-1 blocker, not a calcium channel blocker. So amlodipine best fits the description.

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