Certification of Pharmacy Technicians (ExCPT) Practice Exam

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Which of the following medications is an example of a beta-blocker?

A. Lisinopril
B. Metoprolol
C. Simvastatin
D. Omeprazole

The correct answer is: B. Metoprolol

Metoprolol is an example of a beta-blocker, which are medications that primarily affect the cardiovascular system by blocking the effects of epinephrine (adrenaline) on beta receptors. This results in a decrease in heart rate and blood pressure, making beta-blockers effective in treating conditions such as hypertension, heart failure, and certain types of arrhythmias. In contrast, lisinopril is an angiotensin-converting enzyme (ACE) inhibitor used primarily for hypertension and heart failure. Simvastatin is a statin that lowers cholesterol levels by inhibiting HMG-CoA reductase, and omeprazole is a proton pump inhibitor used to reduce stomach acid production in conditions like gastroesophageal reflux disease (GERD). Understanding the classification of medications is crucial for recognizing their therapeutic uses and mechanisms of action.