Generic Name: risperidone (oral) (ris PER i done)
Brand Names: Risperdal, Risperdal M-Tab
What is Risperdal?
Risperdal is an antipsychotic medication. It is an "atypical antipsychotic". It works by changing the effects of chemicals in the brain.
Risperdal is used to treat schizophrenia and symptoms of bipolar disorder (manic depression). It is also used in autistic children to treat symptoms of irritability.
Risperdal may also be used for purposes other than those listed in this medication guide.
Important information about Risperdal
Risperdal is not for use in psychotic conditions related to dementia. Risperidone may cause heart failure, sudden death, or pneumonia in older adults with dementia-related conditions.
Do not give Risperdal to a child without a doctor's advice.
While you are taking Risperdal, you may be more sensitive to temperature extremes such as very hot or cold conditions. Avoid getting too cold, or becoming overheated or dehydrated. Drink plenty of fluids, especially in hot weather and during exercise. It is easier to become dangerously overheated and dehydrated while you are taking this medication.
Risperdal may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.
Avoid getting up too fast from a sitting or lying position, or you may feel dizzy. Get up slowly and steady yourself to prevent a fall.
Drinking alcohol can increase certain side effects of Risperdal. Stop using this medication and call your doctor at once if you have fever, stiff muscles, confusion, sweating, fast or uneven heartbeats, restless muscle movements in your face or neck, tremor (uncontrolled shaking), trouble swallowing, feeling light-headed, or fainting.
Before taking Risperdal
Risperdal is not for use in psychotic conditions that are related to dementia. Risperdal has caused fatal heart attack and stroke in older adults with dementia-related conditions. You should not use this medication if you are allergic to risperidone.
To make sure you can safely take Risperdal, tell your doctor if you have any of these other conditions:
heart disease, high blood pressure, heart rhythm problems;
high cholesterol or triglycerides (a type of fat in the blood);
a history of heart attack or stroke;
a history of low white blood cell (WBC) counts;
a history of breast cancer;
seizures or epilepsy;
diabetes (risperidone may raise your blood sugar);
a history of suicidal thoughts;
Parkinson's disease; or
Risperdal may cause you to have high blood sugar (hyperglycemia). Talk to your doctor if you have any signs of hyperglycemia such as increased thirst or urination, excessive hunger, or weakness. If you are diabetic, check your blood sugar levels on a regular basis while you are taking Risperdal.
The risperidone orally disintegrating tablet may contain phenylalanine. Talk to your doctor before using this form of risperidone if you have phenylketonuria (PKU).
FDA pregnancy category C. Tell your doctor if you are pregnant or plan to become pregnant while using this medication. Taking antipsychotic medication during the last 3 months of pregnancy may cause problems in the newborn, such as withdrawal symptoms, breathing problems, feeding problems, fussiness, tremors, and limp or stiff muscles. However, you may have withdrawal symptoms or other problems if you stop taking your medicine during pregnancy. If you become pregnant while taking Risperdal, do not stop taking it without your doctor's advice. Risperidone can pass into breast milk and may harm a nursing baby. You should not breast-feed while taking Risperdal.
See also: Risperdal pregnancy and breastfeeding warnings (in more detail)
Do not give Risperdal to a child without a doctor's advice.
How should I take Risperdal?
Take Risperdal exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.
Risperdal can be taken with or without food.
To take risperidone orally disintegrating tablets (Risperdal M-Tabs):
Keep the tablet in its blister pack until you are ready to take the medicine. Open the package and peel back the foil from the tablet blister. Do not push a tablet through the foil or you may damage the tablet.
Using dry hands, remove the tablet and place it in your mouth. It will begin to dissolve right away.
Do not swallow the tablet whole. Allow it to dissolve in your mouth without chewing.
Swallow several times as the tablet dissolves. If desired, you may drink liquid after the tablet is completely dissolved.
Use Risperdal regularly to get the most benefit. Get your prescription refilled before you run out of medicine completely.
Measure the liquid form of Risperdal with a special dose-measuring spoon or cup, not a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one.
Do not mix the liquid form of Risperdal with cola or tea.
It may take several weeks before your symptoms improve. Keep using the medication as directed and tell your doctor if your symptoms do not improve.
Store Risperdal at room temperature away from moisture, light, and heat. Do not allow the liquid form of Risperdal to freeze.
See also: Risperdal dosage (in more detail)
What happens if I miss a dose?
Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
Overdose symptoms may include drowsiness, fast heart rate, feeling light-headed, fainting, and restless muscle movements in your eyes, tongue, jaw, or neck.
What should I avoid while taking Risperdal?
While you are taking Risperdal, you may be more sensitive to temperature extremes such as very hot or cold conditions. Avoid getting too cold, or becoming overheated or dehydrated. Drink plenty of fluids, especially in hot weather and during exercise. It is easier to become dangerously overheated and dehydrated while you are taking risperidone.
Risperdal can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert. Avoid drinking alcohol. It can increase some of the side effects of Risperdal.
Risperdal side effects
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop taking Risperdal and call your doctor at once if you have a serious side effect such as:
fever, stiff muscles, confusion, sweating, fast or uneven heartbeats;
restless muscle movements in your eyes, tongue, jaw, or neck;
drooling, tremor (uncontrolled shaking);
fever, chills, body aches, flu symptoms;
white patches or sores inside your mouth or on your lips;
feeling like you might pass out; or
penis erection that is painful or lasts 4 hours or longer.
Less serious Risperdal side effects may include:
feeling hot or cold;
drowsiness, tired feeling;
dry mouth, increased appetite;
feeling restless or anxious;
sleep problems (insomnia);
nausea, vomiting, stomach pain, constipation;
cough, sore throat, runny or stuffy nose; or
mild skin rash.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
See also: Risperdal side effects (in more detail)
What other drugs will affect Risperdal?
Before you take Risperdal, tell your doctor if you regularly use other medicines that make you sleepy (such as cold or allergy medicine, narcotic pain medicine, sleeping pills, muscle relaxers, and medicine for seizures, depression, or anxiety). They can add to sleepiness caused by Risperdal.
Also tell your doctor if you are taking any of the following medicines:
carbamazepine (Carbatrol, Equetro, Tegretol);
cimetidine (Tagamet) or ranitidine (Zantac);
fluoxetine (Prozac,Sarafem, Symbyax) or paroxetine (Paxil);
phenytoin (Dilantin) or valproic acid (valproate, Depakene, Stavzor);
rifampin (Rifadin, Rimactane, Rifater); or
medicines used to treat Parkinson's Disease such as levodopa (Dopar, Larodopa, Sinemet, Atamet, others), bromocriptine (Parlodel, others), pergolide (Permax), pramipexole (Mirapex), or ropinirole (Requip).
This list is not complete and other drugs may interact with Risperdal. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.
More Risperdal resources
- Risperdal MedFacts Consumer Leaflet (Wolters Kluwer)
- Risperdal Advanced Consumer (Micromedex) - Includes Dosage Information
- Risperdal Prescribing Information (FDA)
- Risperdal Monograph (AHFS DI)
- Risperdal Consta Prescribing Information (FDA)
- Risperdal Consta Advanced Consumer (Micromedex) - Includes Dosage Information
- Risperdal Consta MedFacts Consumer Leaflet (Wolters Kluwer)
- Risperdal M-Tab orally disintegrating tablets MedFacts Consumer Leaflet (Wolters Kluwer)
- Risperidone Prescribing Information (FDA)
- Risperidone Professional Patient Advice (Wolters Kluwer)
Compare Risperdal with other medications
Where can I get more information?
- Your pharmacist can provide more information about Risperdal.
- Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
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Copyright 1996-2011 Cerner Multum, Inc. Version: 20.01. Revision Date: 11/2/2011 1:07:15 PM.