Pharmacology · single question
What is the mechanism of action of carbamazepine?
Show answer and explanation
Correct answer: A. ACE inhibitor
- A. Correct. Carbamazepine blocks voltage-gated sodium channels in a use-dependent manner, stabilizing neuronal membranes and preventing repetitive firing. Effective for trigeminal neuralgia and epilepsy.
- B. Incorrect. Calcium channel blockers are a different class (gabapentin/pregabalin have a partial calcium mechanism).
- C. Incorrect. Beta blockers affect adrenergic receptors, not ion channels.
- D. Incorrect. ACE inhibitors are antihypertensives, not anticonvulsants.