* Pharmacologic response and plasma risperidone levels should be monitored more closely whenever carbamazepine is added to or withdrawn from therapy. <ref name="drugscom" /> <ref name="aricarb"> {{Pubmed|19934718|Strack DK et al. Antipsychotic prescribing practices following withdrawal of concomitant carbamazepine. J Psychiatr Pract. 2009 Nov;15(6):442-8}}</ref>