Suvorexant represents a newer class of hypnotics that works by which mechanism?
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Correct answer: Antagonism of orexin (hypocretin) receptors
Suvorexant is a Dual Orexin Receptor Antagonist (DORA). It promotes sleep by blocking the 'wake-promoting' neuropeptides orexin A and B from binding to their receptors, effectively turning off the brain's arousal system.
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