Urticaria, drug rash, anaphylactic shock, photosensitivity, excessive perspiration, chills, dryness of mouth, nose & throat; hypotension, headache, palpitation, tachycardia extrasystoles; hemolytic anemia, thrombocytopenia, agranulocytosis; sedation, sleepiness, dizziness, disturbed coordination, fatigue, confusion, restlessness, excitation, nervousness, tremor, irritability, insomnia, euphoria, paresthesias, blurred vision, diplopia, vertigo, tinnitus, acute labyrinthitis, hysteria, neuritis, convulsions, CNS depression, hallucinations; epigastric distress, anorexia, nausea, vomiting, diarrhoea, constipation; urinary frequency & retention, difficult urination; thickening of bronchial secretions, chest tightness, wheezing, nasal stuffiness.