R R

What Is Risperidone?

Risperidone is a prescription atypical antipsychotic medication used to treat schizophrenia, certain manic or mixed episodes associated with bipolar I disorder, and irritability associated with autistic disorder. It is available as oral tablets, oral solution, and orally disintegrating tablets, with additional long-acting injectable formulations available under separate brand names. Risperidone is the active ingredient in Risperdal. It affects dopamine and serotonin signaling involved in mood, thinking, and behavior. Treatment can improve symptoms but does not cure the underlying conditions. Risperidone carries a boxed warning for increased mortality in older adults with dementia-related psychosis and is not approved for that condition.

Link to This Resource Page

Provide a valuable resource to your clients or customers by linking to this resource page. Just place the following link on your website.

To display this...

What Is Risperidone?

Risperidone is a prescription atypical antipsychotic medication used to treat schizophrenia, certain manic or mixed episodes associated with bipolar I disorder, and irritability associated with autistic disorder. It is available as oral tablets, oral solution, and orally disintegrating tablets, with additional long-acting injectable formulations available under separate brand names. Risperidone is the active ingredient in Risperdal. It affects dopamine and serotonin signaling involved in mood, thinking, and behavior. Treatment can improve symptoms but does not cure the underlying conditions. Risperidone carries a boxed warning for increased mortality in older adults with dementia-related psychosis and is not approved for that condition.

read more about risperidone ...

Copy this HTML:

Copy HTML Copied!

How Does Risperidone Work?

Risperidone primarily blocks dopamine D2 and serotonin 5-HT2A receptors in the central nervous system. These neurotransmitter pathways influence thought processes, mood, perception, and behavior. Blocking selected receptors can reduce symptoms associated with psychosis and mania, although the medication's complete therapeutic mechanism is not fully established. Risperidone also interacts with alpha-adrenergic and histamine receptors, which can contribute to dizziness, sedation, and changes in blood pressure. Dopamine receptor blockade can increase prolactin levels and cause movement-related adverse effects. Risperidone helps control symptoms during treatment rather than permanently correcting the underlying psychiatric or developmental condition.

What Conditions Does Risperidone Treat?

Oral risperidone is approved for schizophrenia in adults and adolescents aged 13 through 17 years. It is also approved for acute manic or mixed episodes associated with bipolar I disorder in adults and children aged 10 through 17 years. In adults, it may be used alone or with lithium or valproate for bipolar mania. Another indication is irritability associated with autistic disorder in children and adolescents aged five through 17 years, including aggression, self-injury, temper tantrums, and rapidly changing moods. Different long-acting injectable products have separate indications. Risperidone is not approved to treat dementia-related psychosis.

How Should Risperidone Be Taken?

Oral risperidone is taken once or twice daily, with or without food, according to the prescribed formulation and condition. Adults starting treatment for schizophrenia commonly receive 2 mg daily, with a recommended target of 4 mg to 8 mg daily. For bipolar mania, the usual adult starting dose is 2 mg to 3 mg daily. Pediatric doses vary by age, diagnosis, and body weight. For autism-related irritability, children weighing less than 20 kg commonly begin at 0.25 mg daily, while those weighing at least 20 kg begin at 0.5 mg daily. Severe kidney or liver impairment requires lower starting doses and careful titration.

What Are the Side Effects and Warnings of Risperidone?

Common adverse effects include sleepiness, dizziness, increased appetite, weight gain, fatigue, and movement-related symptoms. Serious risks include tardive dyskinesia, neuroleptic malignant syndrome, elevated blood glucose, abnormal cholesterol levels, and increased prolactin. Risperidone can also cause orthostatic hypotension, seizures, and reduced white blood cell counts. It carries a boxed warning for increased mortality in older adults with dementia-related psychosis. Clinicians monitor body weight, metabolic health, movement symptoms, and hormonal effects during treatment. Severe muscle stiffness with fever, uncontrolled movements, fainting, or significant behavioral changes requires prompt medical assessment.

Common Questions About Risperidone

Is risperidone the same as Risperdal?

Yes. Risperidone is the active ingredient in Risperdal. Generic oral formulations and separately labeled long-acting injectable products are also available.

Can risperidone treat bipolar disorder?

Yes. Oral risperidone is approved for acute manic or mixed episodes associated with bipolar I disorder in specified adult and pediatric patients.

Can risperidone be prescribed for autism-related irritability?

Yes. Oral risperidone is approved for irritability associated with autistic disorder in children and adolescents aged five through 17 years.

Can risperidone cause weight gain?

Yes. Risperidone can increase appetite and body weight and affect blood glucose and cholesterol levels. Clinicians may recommend regular metabolic monitoring.

References

DailyMed - RISPERDAL (risperidone) tablets, orally disintegrating tablets, and oral solution. https://dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=7e117c7e-02fc-4343-92a1-230061dfc5e0. Date Accessed November 4, 2026.

Risperidone. LiverTox. https://www.ncbi.nlm.nih.gov/books/NBK548906/. Date Accessed November 4, 2026.

Risperidone. MedlinePlus. https://medlineplus.gov/druginfo/meds/a694015.html. Date Accessed November 4, 2026.

Risperidone. PubChem. https://pubchem.ncbi.nlm.nih.gov/compound/Risperidone. Date Accessed November 4, 2026.

Risperidone. StatPearls. https://www.ncbi.nlm.nih.gov/books/NBK459313/. Date Accessed November 4, 2026.