Ocassional skin rashes & angioedema. Nausea, vomiting, abdominal discomfort, epigastric distress, headache, inability to concentrate, insomnia, tinnitus & vertigo. Bronchospasm; thrombocytopenia, granulocytopenia, jaundice, peptic ulceration, nephropathy, aplastic aneamia, haemolytic anaemia & hearing impairment.