Nogle patienter kan opleve symptomer såsom træthed, svimmelhed, uklarhed, hovedpine, søvnløshed, mareridt, mundtørhed, appetitløshed, kvalme, diarré, nervøsitet, agitation, konfusion, ringen for ørerne, prikken i huden eller sjældent følelse af elektrisk stød, svækkelse, sveden, kramper eller influenza- lignende symptomer.
Some patients may experience symptoms such as tiredness, dizziness, light-headedness, headache, sleeplessness, nightmares, dry mouth, loss of appetite, nausea, diarrhoea, nervousness, agitation, confusion, ringing in the ears, tingling or rarely, electric shock sensations, weakness, sweating, seizures or flu-like symptoms.