Massachusetts Pharmacy Technician License Practice Test

Metoprolol is classified in which category of medication?

1. ACE inhibitor

2. Calcium channel blocker

3. Beta blocker

4. Diuretic

The correct answer is: Beta blocker

Metoprolol is classified as a beta blocker, which is a type of medication primarily used to manage a variety of cardiovascular conditions. Beta blockers work by blocking the action of certain neurotransmitters, specifically catecholamines like adrenaline, on beta-adrenergic receptors in the heart. This results in decreased heart rate and contractility, leading to lower blood pressure and reduced workload on the heart. Therefore, beta blockers such as metoprolol are effective in treating conditions such as hypertension, heart failure, and angina, and are also used for certain types of arrhythmias. Understanding the classification of metoprolol is essential for pharmacy technicians as it informs them about the drug's mechanism of action, therapeutic uses, and potential side effects. Recognizing that it is not an ACE inhibitor, calcium channel blocker, or diuretic helps to avoid confusion with other types of cardiovascular medications, each of which has distinct mechanisms and indications. For example, ACE inhibitors are primarily used for hypertension and heart failure by helping to relax blood vessels. Calcium channel blockers work by decreasing the heart rate and relaxing blood vessels. Diuretics help to eliminate excess fluid and reduce blood pressure by increasing urine output. Each category has specific roles, making it crucial for