Dizziness, headache; diplopia; nausea. Depression, confusional state, insomnia; balance disorder, abnormal coordination, memory impairment, cognitive disorder, somnolence, tremor, nystagmus, hypoesthesia, dysarthria, disturbance in attention, paraesthesia; blurred vision; vertigo, tinnitus; vomiting, constipation, flatulence, dyspepsia, dry mouth, diarrhoea; pruritus, rash; muscle spasms; gait disturbance, asthenia, fatigue, irritability, feeling drunk; fall, skin laceration, contusion.