Paliperidone belongs to the class of medications called antipsychotics. It is used to control the symptoms of schizophrenia and related psychotic disorders. Paliperidone works by readjusting the balance of chemicals in the brain that are involved in schizophrenia.
Schizophrenia can cause symptoms such as hallucinations (e.g., hearing, seeing, or sensing things that are not there), delusions, unusual suspiciousness, and emotional withdrawal. People with this condition may also feel depressed, anxious, or tense.
This medication may be available under multiple brand names and/or in several different forms. Any specific brand name of this medication may not be available in all of the forms or approved for all of the conditions discussed here. As well, some forms of this medication may not be used for all of the conditions discussed here.
Your doctor may have suggested this medication for conditions other than those listed in these drug information articles. If you have not discussed this with your doctor or are not sure why you are taking this medication, speak to your doctor. Do not stop taking this medication without consulting your doctor.
Do not give this medication to anyone else, even if they have the same symptoms as you do. It can be harmful for people to take this medication if their doctor has not prescribed it.
175 mg/0.875 mL
Each prefilled syringe containing a white-to-off-white, sterile, aqueous, prolonged-release suspension contains 175 mg of paliperidone (as 273 mg of paliperidone palmitate). Nonmedicinal ingredients: citric acid monohydrate, polyethylene glycol 4000, polysorbate 20, sodium dihydrogen phosphate monohydrate, sodium hydroxide, and water for injection.
263 mg/1.315 mL
Each prefilled syringe containing a white-to-off-white, sterile, aqueous, prolonged-release suspension contains 263 mg of paliperidone (as 410 mg of paliperidone palmitate). Nonmedicinal ingredients: citric acid monohydrate, polyethylene glycol 4000, polysorbate 20, sodium dihydrogen phosphate monohydrate, sodium hydroxide, and water for injection.
350 mg/1.75 mL
Each prefilled syringe containing a white-to-off-white, sterile, aqueous, prolonged-release suspension contains 350 mg of paliperidone (as 546 mg of paliperidone palmitate). Nonmedicinal ingredients: citric acid monohydrate, polyethylene glycol 4000, polysorbate 20, sodium dihydrogen phosphate monohydrate, sodium hydroxide, and water for injection.
525 mg/2.625 mL
Each prefilled syringe containing a white-to-off-white, sterile, aqueous, prolonged-release suspension contains 525 mg of paliperidone (as 819 mg of paliperidone palmitate). Nonmedicinal ingredients: citric acid monohydrate, polyethylene glycol 4000, polysorbate 20, sodium dihydrogen phosphate monohydrate, sodium hydroxide, and water for injection.
After the monthly dose of paliperidone injection has been established for at least 4 months, using paliperidone injectable suspension, and the same dose has been given for at least 2 consecutive months, your doctor may suggest changing to a long-lasting form of intramuscular injection.
The dose of paliperidone prolonged-release injectable suspension is calculated based on the monthly dose of injectable suspension that works best for you. The first dose of prolonged-release injection is given at the doctor’s appointment when you would otherwise receive a monthly injection. It is injected intramuscularly at your doctor’s office every 3 months. Under exceptional circumstances, a dose may be given 2 weeks before or 2 weeks after the scheduled 3 month dose.
Many things can affect the dose of a medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.
It is important to take this medication exactly as prescribed by your doctor. If you miss an appointment to receive a paliperidone prolonged-release injection, contact your doctor as soon as possible to reschedule your appointment. Store this medication at room temperature, protect it from moisture, and keep it out of the reach of children.
Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.
Do not take paliperidone if you:
Many medications can cause side effects. A side effect is an unwanted response to a medication when it is taken in normal doses. Side effects can be mild or severe, temporary or permanent.
The side effects listed below are not experienced by everyone who takes this medication. If you are concerned about side effects, discuss the risks and benefits of this medication with your doctor.
The following side effects have been reported by at least 1% of people taking this medication. Many of these side effects can be managed, and some may go away on their own over time.
Contact your doctor if you experience these side effects and they are severe or bothersome. Your pharmacist may be able to advise you on managing side effects.
Although most of the side effects listed below don’t happen very often, they could lead to serious problems if you do not seek medical attention.
Check with your doctor as soon as possible if any of the following side effects occur:
Stop taking the medication and seek immediate medical attention if any of the following occur:
Some people may experience side effects other than those listed. Check with your doctor if you notice any symptom that worries you while you are taking this medication.
Before you begin using a medication, be sure to inform your doctor of any medical conditions or allergies you may have, any medications you are taking, whether you are pregnant or breast-feeding, and any other significant facts about your health. These factors may affect how you should use this medication.
Abnormal heart rhythms: This medication can cause abnormal heart rhythms. Certain medications (e.g., quinidine, procainamide, amiodarone, sotalol, chlorpromazine, thioridazine, moxifloxacin) can increase the risk of a type of abnormal heart rhythm called QT prolongation and should not be used in combination with paliperidone. People who have a slow heart rate, low potassium or magnesium levels, or have congenital prolongation of the QT interval are more at risk for this type of abnormal heart rhythm and its complications. Talk to your doctor about the risks and benefits of using this medication.
Blood clots: Rarely, this medication increases the chance of blood clot formation, causing reduction of blood flow to organs or the extremities.
If you have a history of clotting, you may be at increased risk of experiencing blood clot-related problems such as heart attack, stroke, or clots in the deep veins of your leg. Discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Blood counts: This medication can decrease the number of neutrophils (a type of white blood cell that helps fight infection), red blood cells (which carry oxygen), and platelets (which help your blood to clot). Your doctor will do blood tests to monitor this. If you notice any signs of infection (e.g., fever, chills, or sore throat) or unusual bleeding or bruising, contact your doctor immediately.
Body temperature: This medication, like other antipsychotic medications, can disrupt the body’s ability to control body temperature. People who exercise vigorously, who are exposed to extreme heat, are dehydrated, or are taking anticholinergic medications (e.g., benztropine, oxybutynin) are more at risk. Contact your doctor as soon as possible if you feel very hot and are unable to cool down while taking this medication.
Cataract surgery: During eye surgery for cataracts, people who take or have taken paliperidone are at risk for developing a condition called Intraoperative Floppy Iris Syndrome (IFIS). This condition can lead to eye damage. If you are planning to have an operation on your eye, inform your doctor if you are taking or have taken paliperidone.
Cholesterol: Paliperidone can cause increased blood cholesterol levels. If you are at risk of developing high cholesterol or you have high cholesterol levels before starting paliperidone, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Diabetes and blood sugar: Paliperidone may cause an increase in blood sugar levels and glucose tolerance may change. People with diabetes may find it necessary to monitor their blood sugar more frequently while using this medication.
If you have diabetes or are at risk for developing diabetes, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
If you experience weakness, increased thirst, increased urination, and increased appetite while taking this medication, contact your doctor.
Drowsiness/reduced alertness: Paliperidone may affect the mental or physical abilities needed to drive or operate machinery. Avoid driving, operating machinery, or performing other hazardous tasks until you have determined how this medication affects you.
Gastrointestinal problems: Paliperidone should not be taken by people with conditions associated with narrowing of the gastrointestinal tract (e.g., esophagus disorders, inflammatory bowel disease, "short gut" syndrome, cystic fibrosis), or by people who have difficulty swallowing.
Heart conditions: If you have a heart condition, such as angina, heart failure, irregular heartbeat, or you have had a heart attack, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Hypersensitivity syndrome: A severe allergic reaction called hypersensitivity syndrome has occurred for some people taking medications similar to paliperidone. Stop taking the medication and get immediate medical attention if you have symptoms of a severe allergic reaction, including fever, severe rash, swollen glands, yellowing of the skin or eyes, or flu-like symptoms with skin rash or blistering.
Lactose intolerance: Certain strengths (3 mg tablets) of paliperidone tablets are prepared with lactose. If you have hereditary lactose or galactose intolerance problems you should not take this strength of the medication.
Kidney function: Kidney disease or reduced kidney function may cause this medication to build up in the body, causing side effects. If you have reduced kidney function or kidney disease, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Low blood pressure: Paliperidone may cause low blood pressure when rising from a sitting or lying down position. If you feel dizzy, lightheaded, or feel your pulse racing, call your doctor. While you are taking this medication, get up slowly after you have been sitting or lying down for a prolonged period.
Neuroleptic malignant syndrome (NMS): Paliperidone, like other antipsychotic medications, can cause a potentially fatal syndrome known as NMS. If you experience the symptoms of NMS, such as high fever, muscle stiffness, confusion or loss of consciousness, sweating, racing or irregular heartbeat, and fainting, get immediate medical attention.
Parkinson’s disease: People with Parkinson’s disease or dementia with Lewy bodies (DLB) may be at an increased risk of NMS (see warning about NMS), as well as other side effects associated with paliperidone. Talk to your doctor about the risks and benefits of using this medication.
Risperidone: People who are taking risperidone should not take paliperidone at the same time. These medications are related, and taking them together may cause an increased risk of side effects.
Seizures: Paliperidone may increase the risk of seizures, especially in people who have had seizures in the past. People who are at risk of seizures who take this medication should be closely monitored by their doctor. If you have had seizures, discuss with your doctor how this medication may affect your medical condition, how your medical condition may affect the dosing and effectiveness of this medication, and whether any special monitoring is needed.
Suicidal or agitated behaviour: People taking this medication may feel agitated (restless, anxious, aggressive, emotional, and feeling not like themselves), or they may want to hurt themselves or others. These symptoms may occur within several weeks after starting this medication. If you experience these side effects or notice them in a family member who is taking this medication, contact your doctor immediately. You should be closely monitored by your doctor for emotional and behaviour changes while taking this medication.
Tardive dyskinesia (TD): TD, a syndrome consisting of potentially irreversible, involuntary, repetitive movements of the face and tongue muscles, may develop in people who take certain antipsychotic medications including paliperidone. Although TD appears most commonly in seniors, especially women, it is impossible to predict who will develop TD. The risk of developing TD increases with higher doses and long-term treatment. If you experience muscle twitching or abnormal movements of the face or tongue, contact your doctor as soon as possible.
Pregnancy: This medication should not be used during pregnancy unless the benefits outweigh the risks. Using this medication during the last three months of pregnancy can harm the developing baby and cause withdrawal symptoms after birth. If you become pregnant while taking this medication, contact your doctor immediately.
Breast-feeding: This medication passes into breast milk. If you are a breast-feeding mother and are taking paliperidone, it may affect your baby. Talk to your doctor about whether you should continue breast-feeding.
Children: The safety and effectiveness of using this medication have not been established for children under 18 years of age. Clinical studies using paliperidone to treat adolescents with schizophrenia have shown an increased likelihood of movement disorders occurring in this group.
Seniors: Medications similar to paliperidone can increase the risk of death as a result of a stroke, mini-stroke, and severe infection, when used to treat seniors with dementia. Paliperidone should not be used to treat seniors with dementia.
There may be an interaction between paliperidone and any of the following:
If you are taking any of these medications, speak with your doctor or pharmacist. Depending on your specific circumstances, your doctor may want you to:
An interaction between two medications does not always mean that you must stop taking one of them. Speak to your doctor about how any drug interactions are being managed or should be managed.
Medications other than those listed above may interact with this medication. Tell your doctor or prescriber about all prescription, over-the-counter (non-prescription), and herbal medications you are taking. Also tell them about any supplements you take. Since caffeine, alcohol, the nicotine from cigarettes, or street drugs can affect the action of many medications, you should let your prescriber know if you use them.
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