Aspirin: GI disturbances, epigastric discomfort, prolonged bleeding time, rhinitis, urticaria; angioedema, salicylism, tinnitus. Clopidogrel: Dyspepsia, abdominal pain, nausea, vomiting, flatulence, constipation, gastritis, gastric and duodenal ulcers. Serious events include bleeding and GI haemorrhage. GI upset, diarrhoea, paraesthesia, vertigo, headache, dizziness, leucopaenia, eosinophilia, rash and pruritus. Potentially Fatal: Aspirin: Gastric erosion, ulceration and bleeding; severe, occasionally fatal exacerbation of airway obstruction in asthma; Reye's syndrome (childn <12 yrs). Hepatotoxicity; CNS depression, which may lead to coma; CV collapse, resp failure; paroxysmal bronchospasm and dyspnoea. Clopidogrel: Bleeding disorders including GI intracranial haemorrhage and thrombotic thrombocytopenic purpura.