- There is a higher chance of death in older adults who take this drug for mental problems caused by dementia. Most of the deaths were linked to heart disease or infection. This drug is not approved to treat mental problems caused by dementia.
- It is used to treat upset stomach and throwing up.
- It is used to treat schizophrenia.
- It may be given to your child for other reasons. Talk with the doctor.
- If your child has an allergy to this drug or any part of this drug.
- If your child is allergic to any drugs like this one or any other drugs, foods, or other substances. Tell the doctor about the allergy and what signs your child had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
- If your child has any of these health problems: Blood problems, bone marrow disease, brain problems, liver disease, or low blood cell count.
- If your child is feeling very tired or sleepy.
- If your child has recently drunk a lot of alcohol or taken a big amount of drugs that may slow your child’s actions like phenobarbital or some pain drugs like oxycodone.
- Tell dentists, surgeons, and other doctors that your child is using this drug.
- Have your child avoid tasks or actions that call for alertness until you see how this drug affects your child. These are things like riding a bike, playing sports, or using items such as scissors, lawnmowers, electric scooters, toy cars, or motorized vehicles.
- To lower the chance of feeling dizzy or passing out, have your child get up slowly over a few minutes when sitting or lying down. Have your child be extra careful climbing stairs.
- If your child has been taking this drug on a regular basis and stops taking it all of a sudden, your child may have signs of withdrawal. Do not stop giving this drug all of a sudden without calling the doctor. Tell the doctor if your child has any bad effects.
- If your child has high blood sugar (diabetes), you will need to watch his/her blood sugar closely.
- Low white blood cell counts have happened with drugs like this one. This may lead to a higher chance of getting an infection. Deadly infections have rarely happened. Tell the doctor if your child has ever had a low white blood cell count. Call the doctor right away if your child has signs of infection like fever, chills, or sore throat. Talk with the doctor.
- Alcohol may interact with this drug. Be sure your child does not drink alcohol.
- Talk with the doctor before giving your child other drugs and natural products that may slow your child’s actions.
- Your child may get sunburned more easily. Avoid lots of sun, sunlamps, and tanning beds. Use sunscreen and dress your child in clothing and eyewear that protects him/her from the sun.
- Have your child be careful in hot weather or while your child is being active. Have your child drink lots of fluids to stop fluid loss.
- This drug may affect certain lab tests. Be sure the doctor and lab workers know your child takes this drug.
- Have your child’s blood work checked often. Talk with your child’s doctor.
- Do not give to a child younger than 12 years of age.
If your child is or may be sexually active:
- This drug may cause the results of some pregnancy tests to be wrong. Talk with the doctor.
If your child is pregnant or breast-feeding a baby:
- Talk with the doctor if your child is pregnant, becomes pregnant, or is breast-feeding a baby. You will need to talk about the benefits and risks of using this drug.
- Taking this drug in the third trimester of pregnancy may lead to muscle movements that cannot be controlled and withdrawal in the newborn. Talk with the doctor.
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Signs of liver problems like dark urine, feeling tired, not hungry, upset stomach or stomach pain, light-colored stools, throwing up, or yellow skin or eyes.
- If your child is planning to harm him/herself. If the want to harm him/herself gets worse.
- Trouble controlling body movements, twitching, change in balance, trouble swallowing or speaking.
- Very bad dizziness or passing out.
- Very bad headache.
- Chest pain or pressure.
- Shakiness, trouble moving around, or stiffness.
- Not able to pass urine.
- Feeling very tired or weak.
- Any bruising or bleeding.
- Change in how your child acts.
- Change in eyesight, eye pain, or very bad eye irritation.
- Slow heartbeat.
- Pale skin.
- Very hard stools (constipation).
- Enlarged breasts.
- Nipple discharge.
- A very bad and sometimes deadly health problem called neuroleptic malignant syndrome (NMS) may happen. Call your child’s doctor right away if your child has any fever, muscle cramps or stiffness, dizziness, very bad headache, confusion, change in thinking, fast heartbeat, heartbeat that does not feel normal, or is sweating a lot.
- Some people who take this drug may get a very bad muscle problem called tardive dyskinesia. The risk may be greater in older adults, mostly women. The chance that this will happen or that it will never go away is greater in people who take this drug in higher doses or for a long time. Muscle problems may also occur after short-term use with low doses. Call your child’s doctor right away if your child has trouble controlling body movements or if your child has muscle problems with his/her tongue, face, mouth, or jaw like tongue sticking out, puffing cheeks, mouth puckering, or chewing.
If your child has menstrual periods:
- For females, no period.
If your child is or may be sexually active:
- Change in sex ability.
- Hard stools (constipation).
- Dry mouth.
- Feeling sleepy.
- Loose stools (diarrhea).
- Not hungry.
- Upset stomach or throwing up.
- Stuffy nose.
- Sweating a lot.
- Give this drug with or without food. Give with food if it causes an upset stomach.
- Give a missed dose as soon as you think about it.
- If it is close to the time for your child’s next dose, skip the missed dose and go back to your child’s normal time.
- Do not give 2 doses at the same time or extra doses.
- Store at room temperature.
- Protect from light.
- Store in a dry place. Do not store in a bathroom.
- Keep all drugs out of the reach of children and pets.
- Check with your pharmacist about how to throw out unused drugs.
- If your child’s symptoms or health problems do not get better or if they become worse, call your child’s doctor.
- Do not share your child’s drug with others and do not give anyone else’s drug to your child.
- Keep a list of all your child’s drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your child’s doctor.
- Talk with your child’s doctor before giving your child any new drug, including prescription or OTC, natural products, or vitamins.
- Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your child’s doctor, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
If you have any questions or concerns, talk with a member of your healthcare team. You can reach them Monday through Friday from 9:00 am to 5:00 pm at ____________________. After 5:00 pm, during the weekend, and on holidays, please call____________________. If there’s no number listed, or you’re not sure, call
Perphenazine©2015 Memorial Sloan Kettering Cancer Center - Generated on August 1, 2015