Anginal pain; rebound congestion and rhinorrhoea; fear, anxiety, restlessness, tremor, insomnia, confusion, irritability and psychotic states; reduced appetite, nausea, vomiting; gangrene; cerebral haemorrhage and pulmonary oedema; reflex bradycardia, tachycardia and cardiac arrhythmias, palpitations and cardiac arrest, hypotension and dizziness, fainting and flushing. Tissue necrosis and sloughing; myocardial and arterial necrosis.