Palpitations, tachycardia, elevated BP, precordial pain. Overstimulation, restlessness, nervousness, insomnia, tremor, dizziness, headache; nausea, vomiting, dry mouth, abdominal cramps, unpleasant taste, diarrhoea, constipation; micturition disturbances, rash, impotence, changes in libido, facial oedema.