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1 Risperidone is a prescription medication used to treat schizophrenia. 2  It is also used to treat manic or mixed episodes associated with Bipolar I Disorder. 3  Risperidone also is used to treat behavioral symptoms associated with autism. 4  This medication may be prescribed for other uses.
It works by changing the activity of dopamine and other naturally occurring chemicals in the brain. Janssen Pharmaceuticals makes risperidone, and the Food and Drug Administration (FDA) first approved Risperdal in 2002 to treat schizophrenia in adults and youths at least 13 years old. Schizophrenia is a mental illness that can cause people to lose interest in life and develop abnormal thoughts and emotions.