For people with seizures: This drug may cause seizures. It may also affect seizure control in people with epilepsy. For people with hyperprolactinemia high prolactin levels : This drug may increase your prolactin levels. This can make your condition worse. Your doctor should monitor your blood prolactin levels before starting and during treatment with this drug.
For people with heart problems: This drug may decrease your blood pressure. If you have heart problems, ask your doctor whether this drug is safe for you. These include a history of heart attack, angina chest pain , coronary artery disease, heart failure, or heart rhythm problems.
Risperidone may make these conditions worse. For people with kidney problems: If you have moderate to severe kidney disease, you may not be able to clear this drug from your body well. This may cause risperidone to build up in your body.
This can lead to more side effects. Your doctor may reduce your dose if you have kidney disease. For people with liver problems: If you have liver problems, you may not be able to process this drug well. Your doctor may reduce your dose if you have liver disease. This means you may experience more side effects.
These can include confusion, lethargy, frequent falls, trouble moving, restlessness and urge to move, and uncontrollable muscle contractions. They can also include high fever, heavy sweating, stiff muscles, and changes in your breathing, heart rhythm, and blood pressure. For people with phenylketonuria PKU : Risperidone orally disintegrating tablet contains phenylalanine.
For pregnant women: Research in animals has shown negative effects to the fetus when the mother takes the drug. Newborn babies born to mothers taking this drug may have withdrawal symptoms. These symptoms may include:. Some newborns recover within hours or days without treatment, but others may need to be hospitalized.
And if you become pregnant while taking this drug, call your doctor right away. This drug should only be used if the potential benefit justifies the potential risk. For women who are breastfeeding: Risperidone may pass into breast milk and may cause side effects in a child who is breastfed.
Talk with your doctor if you breastfeed your child. You may need to decide whether to stop breastfeeding or stop taking this medication.
For seniors: The kidneys, heart, and liver of older adults may not work as well as they used to. This can cause your body to process drugs more slowly. As a result, more of a drug stays in your body for a longer time. This raises your risk for side effects. Seniors may be more likely to have orthostatic hypotension a decrease in blood pressure when you stand up from a sitting or lying position caused by this drug.
Risperidone oral tablet is used for long-term treatment. For this drug to work well, a certain amount needs to be in your body at all times. If you take too much: You could have dangerous levels of the drug in your body.
Symptoms of an overdose of this drug can include:. But if your symptoms are severe, call or go to the nearest emergency room right away. What to do if you miss a dose: Take your dose as soon as you remember.
But if you remember just a few hours before your next scheduled dose, take only one dose. Never try to catch up by taking two doses at once. This could result in dangerous side effects. Go to hospital immediately if you think you may have developed a blood clot symptoms are usually swelling, pain and redness in the leg ; a clot may travel through blood vessels to the lungs causing chest pain and difficulty breathing.
Also go to hospital if you develop a combination of fever, faster breathing, sweating, muscle stiffness or drowsiness; and tell them that you are taking risperidone. Very rarely risperidone can cause severe allergic reactions. Go to hospital if you have difficulty breathing or swelling of your face or throat.
In rare cases, risperidone can cause a long-lasting and painful erection called priapism. If this happens, you will need to be treated in hospital. Risperidone is not addictive, but stopping it suddenly can cause problems such as difficulty sleeping, feeling or being sick, sweating, and uncontrollable muscle movements. See you doctor if you want to stop, or if you are having these effects. You might feel sleepy in the first few days after taking risperidone. Do not drive a car, ride a bike or operate machines until you see how this affects you.
Take your medicine with you to show to the doctors. Tell them how much you have taken. Get a friend or family member to go with you, if you can, just in case you feel ill on the way. Some side effects that appear should disappear or get better after a few days.
If they do not, you should go back to your doctor. Don't stop taking risperidone until you talk to your doctor or you may get withdrawal symptoms as well. Speak to your pharmacist or doctor if you think you are having side effects from risperidone. There are other side effects that you can get when taking this medicine — we have only included the most common ones here. Please look at the leaflet inside your medicine box, or ask a doctor or pharmacist, if you want to know whether you are getting a side effect from your medicine.
If you do get a side effect, please think about reporting it via the Yellow Card Scheme. Do not stop taking the tablets until you talk to your doctor, or you may get withdrawal symptoms as well. Young people and children aged are more likely than adults to get the following side effects:. We use cookies We use cookies on this website to store user preferences, aid in accessibility and analyse our traffic.
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Guide contents jump to section About risperidone Risperidone and everyday life Uses, warnings, safety and side effects About this information More information and advice. Taking risperidone to treat psychosis: Andrew's story. About risperidone. Please note. Always talk to your doctor about your situation and whether this medication is for you. Thinking about trying medication?
Read our guide. How risperidone works. Risperidone and everyday life. Frequently asked questions. How long does it take to start working? What effects will it have on my body? A side effect of risperidone may be either weight loss or weight gain. Weight gain is more common than weight loss. Your doctor should measure your weight regularly when you are taking risperidone.
Most of the weight gain is in the first six to 12 months, and then it levels out. As you grow you will gain weight naturally, but anything more than that should be watched. Good practice for doctors suggests this routine for checking the weight of people who start taking antipsychotic medicines like risperidone: get your weight noted before you start get your weight checked every week for the first six weeks and then again after three months get your weight and waist measurement checked at least every six months You could take these measurements yourself and keep a chart to show your doctor.
Look at ways to try and lose extra unwanted weight. Should I tell my family and friends I am taking it? Will it affect my sleep? Can I drink alcohol and take street drugs while taking it? Alcohol You can continue to drink alcohol in moderation while taking risperidone. Street drugs Some street drugs can increase levels of dopamine in the brain e. Some street drugs can make you feel sleepy and this could be made worse with risperidone.
Risperidone can produce a false positive test for LSD on a urine drug screen. Talk to your doctor about this if it is a problem for you. Can I take it with other medications? Risperidone can interact with some other medicines and drugs Check with your doctor or pharmacist whether risperidone is OK for you to take if you are on any other medicines. If you have any further questions about this, you should speak to your doctor or pharmacist.
I have allergies and food intolerances. Ask your pharmacist any questions you have about refilling your prescription. It is important for you to keep a written list of all of the prescription and nonprescription over-the-counter medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements.
You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
Risperidone pronounced as ris per' i done. Why is this medication prescribed? How should this medicine be used? Other uses for this medicine What special precautions should I follow? What special dietary instructions should I follow? What should I do if I forget a dose? What side effects can this medication cause? What should I know about storage and disposal of this medication?
Brand names. Other uses for this medicine. What special precautions should I follow? Before taking risperidone, tell your doctor and pharmacist if you are allergic to risperidone or any other medications. Be sure to mention any of the following: antidepressants; carbamazepine Tegretol ; cimetidine Tagamet ; clozapine Clozaril ; dopamine agonists such as bromocriptine Parlodel , cabergoline Dostinex , levodopa Dopar, Larodopa , pergolide Permax , and ropinirole Requip ; medications for anxiety, high blood pressure, or seizures; other medications for mental illness; paroxetine Paxil ; phenobarbital Luminal, Solfoton ; phenytoin Dilantin ; quinidine Quinaglute, Quinidex ; ranitidine Zantac ; rifampin Rifadin, Rimactane ; sedatives; sleeping pills; tranquilizers; and valproic acid Depakote, Depakene.
Your doctor may need to change the doses of your medications or monitor you carefully for side effects. Also tell your doctor if you have ever had to stop taking a medication for mental illness because of severe side effects. Tell your doctor if you have severe vomiting or diarrhea or signs of dehydration now, or if you develop these symptoms at any time during your treatment. If you become pregnant while taking risperidone, call your doctor. Risperidone may cause problems in newborns following delivery if it is taken during the last months of pregnancy.
Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur.
Using alcohol or tobacco with certain medicines may also cause interactions to occur. Using this medicine with any of the following is usually not recommended, but may be unavoidable in some cases. If used together, your doctor may change the dose or how often you use this medicine, or give you special instructions about the use of food, alcohol, or tobacco. The presence of other medical problems may affect the use of this medicine.
Make sure you tell your doctor if you have any other medical problems, especially:. Take this medicine only as directed by your doctor. Do not use more of it, do not use it more often, and do not use it for a longer time than your doctor ordered. The dose of this medicine will be different for different patients. Follow your doctor's orders or the directions on the label.
The following information includes only the average doses of this medicine. If your dose is different, do not change it unless your doctor tells you to do so. The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
If you miss a dose of this medicine, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses. Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing. It is very important that your doctor check your or your child's progress at regular visits to make sure this medicine is working properly.
Blood tests may be needed to check for unwanted effects. Check with your doctor right away if you or your child have any of the following symptoms while using this medicine: convulsions seizures , difficulty with breathing, a fast heartbeat, a high fever, high or low blood pressure, increased sweating, loss of bladder control, severe muscle stiffness, unusually pale skin, or tiredness.
These could be symptoms of a serious condition called neuroleptic malignant syndrome NMS.
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