Anticoagulants Increased risk of gastric erosion and bleeding.
Cyclosporine Nephrotoxicity of both agents may be increased.
CYP-450 Exercise caution when coadministering mefenamic acid with drugs known to inhibit the isoenzyme 2C9.
Lithium Serum lithium levels may be increased.
Methotrexate Increased methotrexate levels.
Salicylates Additive GI toxicity.
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