Sedation, inability to concentrate, lassitude, dizziness, hypotension, muscular weakness, incoordination, GI disturbances, headache, blurred vision, tinnitus, elation or depression, irritability, anxiety, restlessness, tachycardia, palpitations, tremor, insomnia, confusion, anorexia, difficulty in micturition, urinary retention, dyspnoea, dry mouth, chest tightness.