Dyspepsia, nausea, vomiting, constipation, diarrhea, flatulence, esophagitis, GI ulcer & bleeding, colitis; anemia, leucopenia, thrombocytopenia; skin rash, pruritus, urticaria, stomatitis; onset of asthma attack in patients allergic to acetosal or other NSAIDs; dizziness, drowsiness, tinnitus, vertigo; flushes, edema, increased BP, palpitations; abnormal renal function parameters; elevated transaminases or bilirubin.