Risperdal (risperidone) is an antipsychotic medicine that works by changing the effects of chemicals in the brain.
Risperdal is used to treat schizophrenia in adults and children who are at least 13 years old.
Risperdal is also used to treat symptoms of bipolar disorder (manic depression) in adults and children who are at least 10 years old.
Risperdal is also used to treat symptoms of irritability in autistic children who are 5 to 16 years old.
