Information about Risperidone
Risperidone is an atypical antipsychotic that is used widely in the treatment of mania and schizophrenia.
Liver safety of Risperidone
Risperidone therapy is associated with serum aminotransferase elevations and in rare instances has been linked to clinically apparent acute liver injury.
Mechanism of action of Risperidone
Risperidone (ris per' i done) is a benzisoxazole derivative which appears to act as a dopamine type 2 (D2) and serotonin (5-HT2) receptor antagonist. Risperidone is indicated for treatment of schizophrenia and as monotherapy or combination therapy for acute manic or mixed episodes of bipolar I disorder in adults. Risperidone is also used for management of irritability with autistic disorder in children and adolescents.
FDA approval information for Risperidone
Risperidone was approved for use in the United States in 1993 and it is still widely used. Risperidone is available as tablets of 0.25, 0.5, 1, 2, 3 and 4 mg generically and under the brand name of Risperdal. Oral solutions for pediatric use are available as are orally disintegrating tablets and formulations for parenteral administration.
Dosage and administration for Risperidone
The typical initial dose in adults is 1 mg once or twice daily, with increase in dose to as high as 8 mg daily based upon indications, efficacy and tolerance.
Side effects of Risperidone
Common side effects include somnolence, fatigue, restlessness, dizziness, dry mouth, increased saliva, constipation, increased appetite and weight gain. Rare, but potentially severe adverse events include cerebrovascular events, tardive dyskinesia, neuroleptic malignant syndrome, orthostatic hypotension, suicidal ideation and behavior, seizures, diabetes and agranulocytosis.
Second Generation (Atypicals)
- Aripiprazole, Asenapine, Brexpiprazole, Cariprazine, Clozapine, Iloperidone, Lurasidone, Olanzapine, Paliperidone, Pimavanserin, Quetiapine, Risperidone, Ziprasidone