What other drugs will affect losartan?Tell your doctor about all medicines you use, and those you start or stop using during your treatment with losartan, especially: a diuretic or water pill; other blood pressure medications; lithium; celecoxib; or aspirin or other NSAIDs (non-steroidal anti-inflammatory drugs) such as ibuprofen (Advil, Motrin), naproxen (Aleve), celecoxib, diclofenac, indometh