Dizziness (very common); agitation, somnolence, malaise, tremor, confusion, sweating increased (common); insomnia, accidental fall, elevated liver function tests (uncommon); seizures, duodenal ulcers, angina pectoris (rare); cardiac arrhythmia (e. g. atrio-ventricular block, atrial fibrillation and tachycardia), hypertension, pancreatitis, gastrointestinal haemorrhage, hallucination (very rare); and some cases of severe vomiting were associated with oesophageal rupture (unknown).