naproxen
3 interactions related to naproxen
alcohol + naproxen
Naproxen and alcohol combine to substantially increase the risk of stomach bleeding, ulcers, and kidney injury through additive effects on gastric mucosal damage, platelet inhibition, and reduced renal perfusion. Naproxen's longer half-life means the interaction window is more prolonged than with shorter-acting NSAIDs.
methotrexate + nsaids
NSAIDs reduce renal blood flow through prostaglandin inhibition and compete with methotrexate at renal tubular transporters, decreasing methotrexate clearance and raising serum levels. The risk is greatest with high-dose methotrexate or pre-existing renal impairment, where the combination can precipitate myelosuppression, mucositis, hepatotoxicity, and acute kidney injury.
naproxen + fish oil
Naproxen impairs platelet aggregation through COX-1 inhibition, and fish oil EPA and DHA have mild antiplatelet and antithrombotic effects. Combining them can modestly increase bleeding risk, especially at high doses or alongside other blood thinners.