GI disturbances eg, nausea, dyspepsia & vomiting. Urticaria & other skin eruptions, angioedema, rhinitis & severe/fatal paroxysmal bronchospasm & dyspnea. Increased bleeding time, decreased platelet adhesiveness & hypoprothrombinemia (large dose). May exhibit cross-sensitivity to other NSAIDs. Symptoms of salicylism eg, dizziness, tinnitus, deafness, sweating, nausea & vomiting, headache & mental confusion; Reye's syndrome (childn).