GI discomfort, nausea, diarrhea, peptic ulceration, severe GI bleeding; headache, vertigo, dizziness, nervousness, tinnitus, depression, drowsiness, insomnia; hypersensitivity reactions; visual disturbance; anemia, thrombocytopenia, neutropenia, eosinophilia, agranulocytosis; interstitial nephritis, nephrotic syndrome, renal failure; hematuria; fluid retention.