Drowsiness, lightheadedness, headache, dizziness, diplopia, nausea, vomiting, fatigue, hyponatremia, confusional state, depression, apathy, restlessness, affect lability, ataxia, tremor, nystagmus; attention, memory & vision disturbances; diplopia, blurred vision, diarrhoea, constipation, abdominal pain, exanthema, alopecia, acne, asthenia.