Pediatric Medication

Brand Names: US

Haldol; Haldol Decanoate

Brand Names: Canada

Apo-Haloperidol; Haloperidol Injection, USP; Haloperidol-LA; Haloperidol-LA Omega; Novo-Peridol; PMS-Haloperidol; PMS-Haloperidol LA


  • 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.

What is this drug used for?

  • It is used to treat problems with how one acts.
  • It is used to treat schizophrenia.
  • It is used to treat Tourette’s syndrome.
  • It is used to treat mood problems.
  • It may be given to your child for other reasons. Talk with the doctor.

What do I need to tell the doctor BEFORE my child takes this drug?

  • 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 is feeling very tired or sleepy.

If your child is breast-feeding a baby:

  • Be sure your child does not breast-feed a baby while taking this drug.
This is not a list of all drugs or health problems that interact with this drug.
Tell the doctor and pharmacist about all of your child’s drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for your child to take this drug with all of his/her drugs and health problems. Do not start, stop, or change the dose of any drug your child takes without checking with the doctor.

What are some things I need to know or do while my child takes this drug?

All products:

  • Tell all of your child’s health care providers that your child is taking this drug. This includes your child’s doctors, nurses, pharmacists, and dentists.
  • 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.
  • Have your child’s blood work checked often. Talk with your child’s doctor.
  • If your child has high blood sugar (diabetes), you will need to watch his/her blood sugar closely.
  • 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.
  • 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.
  • Sudden death and heartbeats that are not normal have happened with this drug. Very high doses raise the chance of these problems. Tell your doctor if you have a heartbeat that is not normal like long QT on ECG, electrolyte problems like low potassium or magnesium levels, heart problems, low thyroid function, or a family member that has a long QT on ECG. Tell your doctor if you take any drugs that may raise the chance of a heartbeat that is not normal. Ask your doctor if you are not sure. Talk with your doctor.
  • 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.
  • 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 your doctor if you have ever had a low white blood cell count. Call your doctor right away if you have signs of infection like fever, chills, or sore throat. Talk with your doctor.
  • If your child also takes lithium, talk with your child’s doctor. A few people who were taking this drug along with lithium have had very bad side effects and brain problems that did not go away.

If your child is pregnant:

  • Tell the doctor if your child is pregnant or becomes pregnant. You will need to talk about the benefits and risks of your child using this drug while pregnant.
  • 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.

All oral products:

  • Do not give to a child younger than 3 years of age.

What are some side effects that I need to call my child’s doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your child’s doctor or get medical help right away if your child has any of the following signs or symptoms that may be related to a very bad side effect:
  • 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.
  • Trouble controlling body movements, twitching, change in balance, trouble swallowing or speaking.
  • A heartbeat that does not feel normal.
  • A fast heartbeat.
  • Very bad dizziness or passing out.
  • Feeling confused.
  • Shakiness, trouble moving around, or stiffness.
  • Very bad headache.
  • Feeling very tired or weak.
  • Not able to pass urine.
  • Any unexplained bruising or bleeding.
  • Change in eyesight.
  • Hallucinations (seeing or hearing things that are not there).
  • Seizures.
  • Mood changes.
  • 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.
  • Call your child’s doctor right away if your child gets a painful erection (hard penis) or gets an erection that lasts for longer than 4 hours. If this is not treated right away, it may lead to lasting sex problems and your child may not be able to have sex in the future.
  • Some people have gotten pneumonia when taking this drug. Sometimes, this has been deadly. Call your child’s doctor right away if your child has fever, chest pain, cough, shortness of breath, or wheezing.

If your child has menstrual periods:

  • For females, no period.

If your child is or may be sexually active:

  • Change in sex ability.

What are some other side effects of this drug?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your child’s doctor or get medical help if any of these side effects or any other side effects bother your child or do not go away:
  • Feeling sleepy.
  • Anxiety.
  • Hard stools (constipation).
  • Dry mouth.
  • Upset stomach or throwing up.
  • Loose stools (diarrhea).
  • Headache.
  • Not hungry.
  • Restlessness.
  • Not able to sleep.
These are not all of the side effects that may occur. If you have questions about side effects, call your child’s doctor. Call your child’s doctor for medical advice about side effects.
You may report side effects to your national health agency.

How is this drug best given?

Give this drug as ordered by your child’s doctor. Read all information given to you. Follow all instructions closely.

All oral products:

  • Give this drug with or without food. Give with food if it causes an upset stomach.
  • To gain the most benefit, do not miss giving your child doses.
  • Keep giving this drug to your child as you have been told by your child’s doctor or other health care provider, even if your child feels well.

Oral solution:

  • Measure liquid doses carefully. Use the measuring device that comes with this drug.
  • Mix with water or fruit juice as you have been told.

Short-acting shot:

  • It is given as a shot into a muscle.
  • It may be given as a shot into a vein.

Long-acting shot:

  • It is given as a shot into a muscle.

What do I do if my child misses a dose?

All oral products:

  • 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.

All injection products:

  • Call your child’s doctor to find out what to do.

How do I store and/or throw out this drug?

All oral products:

  • Store at room temperature.
  • Protect from light.
  • Store in a dry place. Do not store in a bathroom.

Oral solution:

  • Do not freeze.

All injection products:

  • If you need to store this drug at home, talk with your child’s doctor, nurse, or pharmacist about how to store it.

All products:

  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Check with your pharmacist about how to throw out unused drugs.

General drug facts

  • 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, nurse, 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.

Consumer Information Use and Disclaimer

This information should not be used to decide whether or not to take this medicine or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

Last Reviewed Date



© 2016 Wolters Kluwer Clinical Drug Information, Inc. and its affiliates and/or licensors. All rights reserved.