Pharmacy Technician Certification Board Practice Exam

Which of the following antihypertensive drugs is a beta-blocker?

1. Verapamil

2. Bisoprolol

3. Losartan

4. Ramipril

The correct answer is: Bisoprolol

Bisoprolol is categorized as a beta-blocker, which means it works by blocking the effects of epinephrine (adrenaline) on beta receptors in the heart and blood vessels. This action reduces heart rate, decreases cardiac output, and ultimately lowers blood pressure. It is specifically used in the management of hypertension, heart failure, and to prevent angina. In contrast, the other choices represent different classes of antihypertensive medications. Verapamil is a calcium channel blocker, which works by relaxing the muscles of your heart and blood vessels. Losartan is an angiotensin II receptor antagonist, used to block the effects of a substance that can constrict blood vessels. Ramipril is an ACE (angiotensin-converting enzyme) inhibitor that helps to relax blood vessels by preventing the formation of angiotensin II. Each of these medications has its distinct mechanism of action in the treatment of hypertension, which is why Bisoprolol stands out as the beta-blocker in this group.