Lithium is a commonly prescribed treatment for bipolar disorder. Many early studies on which its use has been historically based no longer meet current research standards. A large number of studies with more modern designs have been recently published warranting a review. New research adds to the evidence for lithium's efficacy in mania and maintenance. There is also additional evidence, albeit less robust, to support its benefit in bipolar depression and mixed episodes. Meta-analyses of mainly observational data have found reduced suicidal behavior in bipolar patients taking lithium. Careful monitoring and prescribing can reduce the risk of adverse effects.
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