Valproic acid is considered a 'broad-spectrum' antiepileptic. Which of the following is NOT a mechanism by which it exerts its effects?
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Correct answer: Direct agonism of Alpha-2 adrenergic receptors
Valproic acid has multiple mechanisms, including sodium channel blockade, T-type calcium channel inhibition, and enhancement of GABAergic neurotransmission. It does not have significant activity at alpha-2 adrenergic receptors.
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