This dosage information is for risperidone oral tablet. All possible dosages and drug forms may not be included here. Your dosage, drug form, and how often you take the drug will depend on:. Your doctor may give you a lower starting dosage of 0.
They may increase your dosage more slowly to reduce your risk for side effects. For people with kidney disease: If you have severe kidney disease, your starting dosage should be 0. Your doctor may increase your dosage by 0.
For people with liver disease: If you have severe liver disease, your starting dosage should be 0. However, because drugs affect each person differently, we cannot guarantee that this list includes all possible dosages. Always speak with your doctor or pharmacist about dosages that are right for you.
NMS is a rare but serious condition that can happen in people who take antipsychotic drugs, including risperidone. This condition can be fatal and must be treated in a hospital. Symptoms can include:. Risperidone can cause metabolic changes that might increase your risk for having a stroke or heart attack. You and your doctor should watch your blood sugar, symptoms of diabetes weakness or increased urination, thirst, or hunger , weight, and cholesterol levels. This drug may cause tardive dyskinesia.
This condition may not go away even if you stop taking this drug. If you have an allergic reaction, call your doctor or local poison control center right away. If your symptoms are severe, call or go to the nearest emergency room. Taking it again could be fatal cause death. Consuming alcoholic drinks while taking risperidone can increase your risk for drowsiness from risperidone. If you drink alcohol, talk with your doctor about whether risperidone is safe for you.
For people with diabetes: This drug may increase your blood sugar levels. This may make your diabetes worse. Very high blood sugar may lead to coma or death. If you have diabetes or risk factors of diabetes such as being overweight or a family history of diabetes , your doctor should check your blood sugar levels before and during treatment with this drug.
For people with high cholesterol: This drug may increase your cholesterol and triglyceride levels. This may raise your risk for heart attack and stroke. High cholesterol may not cause any symptoms. Your doctor may check your cholesterol and triglyceride levels during treatment with this drug. For people with low blood pressure: This drug may further lower your blood pressure.
This may make your condition worse. Your doctor should monitor your blood pressure while you take this drug. For people with a low white blood cell count: This drug may further decrease your white blood cell count. Your doctor should monitor your white blood cell count often during the first few months of treatment with this drug. 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.
For this reason, it may be best to take medicine for your mental health when breastfeeding. If your baby was premature or has health problems, then you will need to be extra careful about taking medicines while breastfeeding. It may be best not to breastfeed if this is the case, but you should discuss this with your doctor or midwife. These effects should pass after the first couple of weeks.
If they do not, and this is a problem for you, go back to the doctor and see what else you could try. While taking risperidone it might be more difficult for you to fall pregnant, but this effect is not permanent. This hormone is produced in high levels to produce milk in breastfeeding mothers and provides some natural contraception. This means it may be more difficult to get pregnant if your prolactin levels rise.
Do NOT rely on this as an alternative to good contraception. Talk to your doctor about this if you want to get pregnant, and see below for more information about taking risperidone during pregnancy. Taking risperidone may make you feel tired and dizzy, and affect your eyesight. This could be dangerous in some sports like cycling or driving. It might be best to stop such sports for the first few days, until you know how it affects you.
Taking risperidone may make you feel tired or make it hard to fall asleep at night. It can also give you headaches or affect your eyesight. If they are more than a month away, however, you might find that it is better to start risperidone to improve your motivation to study. Psychosis and schizophrenia themselves can also affect concentration. You need to talk to your doctor or pharmacist before starting treatment with risperidone if any of the following apply to you:.
If you take risperidone for bipolar disorder or schizophrenia , you should think about taking it for a few years, otherwise your old symptoms can come back. You will get most benefit from your risperidone if you take it regularly at the dose prescribed by your doctor.
Make sure that you know your dose. If it is not written on the label, check with your pharmacist or doctor. Risperidone is usually taken once or twice a day. You will start with a low dose, which will be increased slowly to a dose that is effective for you. This could be a mealtime, or when you brush your teeth. For the normal coated tablets, swallow them whole with a drink of water - if you chew them, they taste bitter.
You can break them into two pieces at the line on the tablet if you have trouble swallowing them as one piece. For the orodispersible tablets melts , put it on your tongue and let it dissolve there and then swallow it you can wash down with water if needed.
You can dilute the oral solution with any other non-alcoholic drink if it makes it nicer to take, apart from a cup of tea or a glass of cola the tannin chemical in tea and cola stops the risperidone from absorbing properly into your body. If you agree to have the long-acting injection LAI , a doctor or nurse will inject this into a muscle in your arm or bottom every two weeks. It is slowly working in your body all the time between injections.
If you forget to take it by your next dose, just take the next dose at the correct time. Do not try to catch up on missed doses. If you miss your appointment for your injection, contact your doctor straight away to make another appointment. If you forget to take your tablets for a few days, or you miss an injection, you may start getting your old symptoms back. You should talk to your doctor about this.
When you start taking an antipsychotic, your brain adjusts to having lower levels of dopamine around. If you stop taking the antipsychotic suddenly, the balance starts to change again, and your brain can take a while to adapt to this change.
You could get your old symptoms back. You could also get some symptoms from the change, which are called withdrawal symptoms, although these are mild and rare with risperidone. They will reduce and stop the risperidone slowly so that any problems like your old symptoms coming back can be picked up quickly. It is better to agree stopping with a doctor who will reduce your dose gradually. This will be done over a few weeks. If you have taken more risperidone than the dosage recommended by the doctor who prescribed it to you, you must get medical help immediately — even if you do not feel any different.
Risperidone can sometimes cause serious side effects. Tell your doctor immediately if you experience unusual movements mainly of the face or tongue.
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. 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.
It is sometimes used in dementia , for agitation, restlessness, aggression and hallucinations. It has also been used to help with behavior in autism. It does not cure these conditions but is used to help ease the symptoms and help you on your recovery path. It can help improve symptoms such as extreme mood swings of bipolar disorder, the experience of hearing voices hallucinations , ideas that distress you and don't seem to be based in reality delusions , and difficulty in thinking clearly thought disorder.
Risperidone belongs to a group of medicines called antipsychotics. Read more about antipsychotic medication.
In New Zealand, r isperidone is available as tablets or a liquid solution.
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