NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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What type of drug is Ketamine?

  1. Beta-blocker

  2. NMDA receptor antagonist

  3. ACE inhibitor

  4. Calcium channel blocker

The correct answer is: NMDA receptor antagonist

Ketamine is an anesthetic drug used to induce hallucinations for medical or recreational purposes. Beta-blockers are not used as an anesthetic or for inducing hallucinations. ACE inhibitors are used to treat high blood pressure and other cardiovascular conditions, whereas calcium channel blockers are used for high blood pressure and other conditions including heart rhythm disorders. None of these medications function similarly to ketamine, which acts as an NMDA receptor antagonist, blocking certain glutamate receptors in the brain and producing dissociative effects. Therefore, B is the correct answer.

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