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CNS Drugs. 2010 Jan;24(1):65-84. doi: 10.2165/11202620-000000000-00000.

Blonanserin: a review of its use in the management of schizophrenia.

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Adis, a Wolters Kluwer Business, Mairangi Bay, North Shore, Auckland, New Zealand.


Oral blonanserin (Lonasen) is an atypical antipsychotic agent indicated for use in patients with schizophrenia in Japan and Korea. It is effective in the treatment of patients with schizophrenia, providing short- and long-term efficacy against both the positive and negative symptoms of the disorder in several randomized and noncomparative trials. Notably, in two randomized, double-blind trials of 8 weeks' duration, blonanserin was noninferior to haloperidol or risperidone for primary endpoints, although it appeared to be better than haloperidol in improving negative symptoms. Blonanserin is generally well tolerated and appears to have an acceptable profile in terms of bodyweight gain. Potential tolerability benefits of the drug in short-term trials included fewer extrapyramidal symptoms than haloperidol and fewer reports of prolactin level increases or hyperprolactinaemia than risperidone. Nevertheless, extrapyramidal symptoms and hyperprolactinaemia were among the most common adverse reactions associated with blonanserin in noncomparative long-term studies. Further prospective and long-term comparative studies are required in order to definitively position blonanserin with respect to other antipsychotic agents. In the meantime, available clinical data suggest that blonanserin is an effective and generally well tolerated option for the short-term treatment of schizophrenia and for those requiring longer-term therapy.

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