Almindelige bivirkninger (mellem 1 ud af 100 patienter og 1 ud af 10 patienter): • forhøjede niveauer af leverenzymer, især ved indgivelse sammen med de antiepileptiske lægemidler carbamazepin og natriumvalproat; • aggressivitet, irritabilititet, uro, usædvanlig pirrelighed (hyperexcitabilitet);
Common side effects (between one in 100 patients and one in 10 patients): • raised levels of liver enzymes, especially when given with either of the antiepileptic medicines carbamazepine and sodium valproate; • aggressiveness, irritability, agitation, hyperexcitability (state of being unusually excitable); • sleep disorders (abnormal sleeping); • hyperkinesis (exaggerated movements); • nausea, vomiting; • a low number of a type of white blood cells.