Risperidone is an atypical antipsychotic. It works by affecting the levels of chemical messengers (dopamine and serotonin) to improve mood, thoughts and behavior.
Insomnia (difficulty in sleeping), Parkinsonism, Sedation, Dizziness, Weight gain, Akathisia (inability to stay still), Anxiety, Gastrointestinal symptom, Increased prolactin level in blood
Risperidone is used in the treatment of schizophrenia and mania.