Hovedpine Svimmelhed, konfusion, tremor, agitation, paræstesi Hjerneødem, ataksi, diplopi, vertigo, hypæstesi Kramper, encephalopati, Guillain- Barre syndrom, ekstrapyramidale symptomer, søvnighed under infusion
Headache Dizziness, confusional state, tremor, agitation, paraesthesia Brain oedema, ataxia, diplopia, vertigo, hypoaesthesia Convulsion, encephalopathy, Guillain-Barre syndrome, extrapyramidal symptoms, somnolence during infusion