Kentucky Medication Aide (KMA) State Practice Exam

Which medication class does Captopril belong to?

1. Beta blockers

2. ACE inhibitors

3. Antihistamines

4. Basophil suppressants

The correct answer is: ACE inhibitors

Captopril belongs to the class of medications known as ACE inhibitors. This class works by inhibiting the enzyme angiotensin-converting enzyme (ACE), which is crucial in the renin-angiotensin system that regulates blood pressure. By blocking this enzyme, Captopril decreases the production of angiotensin II, a substance that narrows blood vessels and raises blood pressure. As a result, ACE inhibitors like Captopril help to lower blood pressure and are often prescribed for conditions such as hypertension and heart failure. The other medication classes listed do not apply to Captopril. Beta blockers, for instance, function primarily by blocking the effects of adrenaline on the cardiovascular system, while antihistamines are used to treat allergic reactions and conditions caused by the release of histamine. Basophil suppressants, although a lesser-known category, do not include Captopril either. Thus, recognizing Captopril as an ACE inhibitor is essential for understanding its role in managing cardiovascular health.