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  • Title: Antiepileptic drugs for bipolar disorder and the risk of suicidal behavior: a 30-year observational study.
    Author: Leon AC, Solomon DA, Li C, Fiedorowicz JG, Coryell WH, Endicott J, Keller MB.
    Journal: Am J Psychiatry; 2012 Mar; 169(3):285-91. PubMed ID: 22193537.
    Abstract:
    OBJECTIVE: In 2009 the U.S. Food and Drug Administration issued a warning regarding suicidality and antiepileptic drugs based on meta-analyses of 199 randomized trials (over 43,000 subjects with different illnesses) of 11 antiepileptics. The present study examines the hypothesis that the three antiepileptics approved for bipolar disorder (carbamazepine, lamotrigine, and valproate) are associated with an elevated risk of suicide attempts and suicides. METHOD: A prospective observational study was conducted at five U.S. academic medical centers from 1978 to 2009. Analyses included 199 participants with bipolar disorder for whom 1,077 time intervals were classified as either exposed to an antiepileptic (carbamazepine, lamotrigine, or valproate) or not exposed to an antiepileptic, an antidepressant, or lithium during 30 years of follow-up. RESULTS: Participants who had more severe manic symptoms were more likely to receive antiepileptic drugs. Mixed-effects grouped-time survival models revealed no elevation in risk of suicide attempt or suicide during periods when participants were receiving antiepileptics relative to periods when they were not (hazard ratio=0.93, 95% CI=0.45-1.92), controlling for demographic and clinical variables through propensity score matching. CONCLUSIONS: In this longitudinal observational study, the risk of suicide attempts or suicides was not associated with the antiepileptics approved for bipolar disorder.
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