Epigastric pain, nausea, vomiting, diarrhoea; haemolytic anaemia, thrombocytopenia, neutropenia, agranulocytosis; elevated serum aminotransferase activity, clinical hepatitis eg, fatal fulminant hepatitis; rashes, skin eruptions; renal papillary necrosis, nephrotic syndrome; hypersensitivity reactions, headache, dizziness, vertigo, hearing disturbances eg, tinnitus; photosensitivity.