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Risperdal
Risperidone
$85.00
1mg · 5 × 20 tablets · 3 months supply
Brand· By Janssen Cilag
$28.33 per month
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Generic packs carry the same active ingredient at the same strength.
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Annual cost
$306a year at this pack size
Prescription required
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FDA boxed warningIncreased mortality in elderly patients with dementia-related psychosis
Elderly patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk of death. RISPERDAL is not approved for the treatment of patients with dementia-related psychosis.
Elderly patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk of death. RISPERDAL is not approved for use in patients with dementia-related psychosis.
About Risperdal
Overview
Risperdal contains risperidone, an atypical antipsychotic medicine. It is used to treat schizophrenia and acute manic or mixed episodes associated with bipolar I disorder, either alone or with lithium or valproate. It is also used to treat irritability associated with autistic disorder. How it works in schizophrenia is not fully understood, but it may act by blocking receptors for the brain chemicals dopamine and serotonin.
What it treats
- Schizophrenia. - Acute manic or mixed episodes associated with bipolar I disorder, used alone or with lithium or valproate. - Irritability associated with autistic disorder.
Safety information
Side effects
Common side effects include sleepiness, dizziness, tiredness, anxiety, blurred vision, tremor, muscle stiffness, slowed movements, restlessness and muscle spasms. Digestive effects include nausea, vomiting, stomach pain or discomfort, indigestion, diarrhea, constipation, dry mouth and increased saliva. Increased appetite, weight gain, rash, a blocked nose, upper respiratory tract infections and a sore throat have also been reported. Serious risks that warrant contacting a doctor include neuroleptic malignant syndrome, potentially persistent involuntary movements (tardive dyskinesia), seizures, difficulty swallowing, a prolonged painful erection, low white blood cell counts, falls and problems regulating body temperature. Risperdal can also cause a drop in blood pressure when standing and impair thinking and movement; use caution when operating machinery. Other important risks include high blood sugar or diabetes, changes in blood fats, significant weight gain and persistently raised prolactin levels. Contact a doctor if you develop excessive thirst, frequent urination, increased hunger or weakness, which may indicate high blood sugar. Blood sugar and weight monitoring may be needed, and blood counts should be checked in people with a history of significantly low white blood cell counts. Risperdal is associated with an increased risk of death and stroke in older adults with dementia-related psychosis. It is not approved for use in patients with dementia-related psychosis.
FDA boxed warning
Increased mortality in elderly patients with dementia-related psychosis
Elderly patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk of death. RISPERDAL is not approved for the treatment of patients with dementia-related psychosis.
Elderly patients with dementia-related psychosis treated with antipsychotic drugs are at an increased risk of death. RISPERDAL is not approved for use in patients with dementia-related psychosis.
A boxed warning is the strongest warning the US Food and Drug Administration requires on a medicine label. Text is taken from the official label, with internal section references removed.
When to call your doctor
If symptoms are severe or getting worse quickly, seek emergency care rather than waiting.
Before taking this medicine
Do not take Risperdal if you have a known allergy to risperidone, paliperidone or any of its ingredients. Severe allergic reactions, including anaphylaxis and angioedema (swelling), have been reported. Risperdal is not approved for dementia-related psychosis. Stroke and other cerebrovascular events have been reported in elderly patients with this condition. Tell your prescriber if you have diabetes or risk factors for diabetes, a history of seizures, conditions that increase seizure risk, a history of significantly low white blood cell counts, or a tendency to develop low blood pressure when standing. Blood sugar, weight and, in some patients, white blood cell counts need monitoring. Risperdal can also cause changes in blood fats and persistently raised prolactin levels. Other important risks include neuroleptic malignant syndrome, a serious reaction requiring immediate discontinuation and close monitoring, and tardive dyskinesia, an involuntary movement disorder. Risperdal may impair thinking and movement; use caution when operating machinery. Tell your prescriber if you are pregnant. Exposure during the third trimester may cause movement problems or withdrawal symptoms in the newborn.
Interactions
Tell your doctor if you take carbamazepine, fluoxetine or paroxetine. Carbamazepine and other medicines that increase certain enzyme activity can lower risperidone levels in the blood. Fluoxetine, paroxetine and other medicines that block the CYP2D6 enzyme can raise risperidone levels. Your prescriber may need to adjust your treatment if you take these medicines together.
Using Risperdal
Dosing
Dosing is set by your prescriber. Each health care professional may prescribe medication differently according to a patient's medical history and condition, so follow the directions on your prescription label and speak to your doctor or pharmacist before changing anything.
Storage
Store below 25°C in a dry place, in the original pack, away from direct light and moisture. Do not keep it in a bathroom. Keep all medicines out of the sight and reach of children.
Clinical information on this page is summarised from the US FDA label RISPERDAL (RISPERIDONE) TABLET RISPERDAL M-TAB (RISPERIDONE) TABLET, ORALLY DISINTEGRATING RISPERDAL (RISPERIDONE) SOLUTION [JANSSEN PHARMACEUTICALS, INC.] (DailyMed, retrieved 19 September 2026).
Patient information and references
Official and supporting information to read alongside advice from your prescriber or pharmacist.
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