描述

Naproxen, like all NSAIDs, reduces renal prostaglandin synthesis, impairing lithium excretion and causing lithium toxicity.

机制

Naproxen inhibits COX-1 and COX-2, reducing prostaglandin E2-mediated vasodilation of renal afferent arterioles, decreasing GFR and lithium clearance with 25–50% elevation in serum lithium.

临床意义

Even short courses of naproxen can precipitate lithium toxicity; the interaction is well-documented across all NSAIDs.

处理措施

Avoid NSAIDs; use acetaminophen for analgesia in patients on lithium; if NSAID is essential, monitor lithium levels within days.

医疗免责声明

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making medication decisions.

Data sources: ChEMBL, PubChem, DailyMed.