<p>Gastrointestinal side effects are the most common and consist of abdominal pain, nausea and constipation. Gastrointestinal ulceration and bleeding may also occur. The most frequently reported central nervous system side effects are drowsiness, dizziness, headache and nervousness. Other adverse effects include depression, tinnitus, confusion, light-headedness, insomnia, psychiatric disturbances, syncope, convulsions, coma, peripheral neuropathy, blurred vision and other ocular effects, oedema and mass gain, hypertension, hematuria, skin rashes, pruritus, urticaria, stomatitis, alopecia and hypersensitivity reactions. A hypersensitivity syndrome consisting of fever and chills, skin rashes or other cutaneous manifestations, hepatotoxicity, renal toxicity (including renal failure), leukopenia, thrombocytopenia, eosinophilia, inflammed glands or lymph nodes, and arthralgia have been reported. Leucopenia, purpura, thrombocytopenia, aplastic anaemia, haemolytic anaemia, agranulocytosis, epitaxis, hyperglycaemia, hyperkalaemia and vaginal bleeding have been reported. There have also been reports of hepatitis and jaundice or renal failure.</p>