What is already known on this topic

Recently, clinical guidelines about treatment of mania have been published by important scientific societies.1 Atypical antipsychotic adjunctive therapy to lithium or valproate is effective in treating acute mania; however, antipsychotics should not be continued unless the benefits of reducing relapse outweigh the risks such as weight gain and metabolic syndrome.2 So far, there is no high-quality evidence for such beneficial duration of the therapy. The study by Yatham and colleagues aimed to determine the efficacy of different durations (24 and 52 weeks) of atypical antipsychotic adjunctive therapy to mood stabiliser versus discontinuing …