How does high-dose Aspirin therapy (used for anti-inflammatory purposes) differ from low-dose Aspirin (used for cardioprotection) in terms of metabolic clearance?
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Correct answer: High-dose follow zero-order kinetics; low-dose follow first-order
At low doses, aspirin is cleared by first-order kinetics. However, at anti-inflammatory or toxic doses, the metabolic pathways in the liver become saturated, and the drug follows zero-order kinetics, significantly increasing the risk of accumulation.
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