Risperidone (Belivon, Rispen, Risperdal) is an atypical antipsychotic medication. It is most often used to treat delusional psychosis (including schizophrenia), but is also used in the treatment of bipolar disorder (as well as other members of the atypical antipsychotic family), and has shown some success in treating symptoms of Asperger's Syndrome and autism. ...