Almindelig: perifere neurologiske symptomer inklusive perifer neuropati, paræstesier og perifer neuritis, svimmelhed, abnorme drømme, hovedpine, søvnløshed, abnorme tanker, somnolens
common: peripheral neurologic symptoms including peripheral neuropathy, paresthesia, and peripheral neuritis; dizziness; abnormal dreams; headache, insomnia; abnormal thinking; somnolence