| Nausea, Vomiting, Dizziness, CNS stimulation, Somnolence, Vertigo, Headache, Sweating, Stupor, Dry Mouth, Hypotension, Hypertension, Pulmonary Oedema, Fatigue, Constipation, Change in Mood, Facial flush, Anaphylaxis, Respiratory depression, Asthenia, Risk of seizure |