GI discomfort, nausea & diarrhea. Peptic ulceration & severe GI bleeding. Headache, vertigo, dizziness, nervousness, tinnitus, depression, drowsiness & insomnia. Anemia, thrombocytopenia, neutropenia, eosinophilia & agranulocytosis. Renal failure especially in patients w/ preexisting renal impairment. Hematuria, fluid retention, nephropathy (long-term use). Photosensitivity, alveolitis, pulmonary eosinophilia, pancreatitis, Stevens-Johnson syndrome & toxic epidermal necrolysis.