Abstract

BackgroundAlthough lamotrigine may be useful for treating bipolar depressive patients, some lamotrigine-associated adverse effects may prevent the continuation of treatment. The purpose of the present study was to identify risk factors for lamotrigine discontinuation after adjustment for several potential interactive factors. MethodsWe examined tolerability in those who discontinued lamotrigine within 2 months of treatment and those who maintained lamotrigine for more than 2 months. Groups were examined separately because 6–8 weeks are necessary to titrate dose and drug eruptions can often occur within 2 months of treatment commencement. ResultsMultiple regression analysis revealed that valproate combination was positively and significantly associated with lamotrigine discontinuation after adjustment for other factors. LimitationsThe limitations of the present study were retrospective observation and a relatively small number of subjects. ConclusionsThe present findings reconfirm that lamotrigine and valproate combination treatment may prevent the continuation of lamotrigine in some patients.

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