Pediatric Medication

Brand Names: US


Brand Names: Canada

Fludara; Fludarabine Phosphate for Injection; Fludarabine Phosphate for Injection, USP; Fludarabine Phosphate Injection, PPC STD.


  • This drug may have unsafe effects on the bone marrow. The bone marrow may not be able to make cells found in the blood as well as it used to.
  • This drug may sometimes cause deadly autoimmune diseases. Talk with the doctor.
  • This drug may cause very bad and sometimes deadly nervous system problems. These include loss of eyesight, confusion, and seizures. Sometimes, people have fallen into a coma. Talk with the doctor.
  • Have blood work checked as you have been told by the doctor. Talk with the doctor.
  • Do not take this drug with pentostatin. Very bad and sometimes deadly lung problems may happen. Talk with the doctor.

What is this drug used for?

  • It is used to treat a type of leukemia.
  • 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 has kidney disease.
  • If your child has a type of anemia called hemolytic anemia.

If your child is breast-feeding a baby:

  • Talk with the doctor if your child is breast-feeding a baby or plans to breast-feed a baby.
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?

  • 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 or clear eyesight 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.
  • Skin cancer has happened during or after treatment with this drug. Talk with the doctor.
  • Your child may have more chance of getting infections. Avoid crowds and people with infections, colds, or flu.
  • Your child may bleed more easily. Make sure your child is careful and avoids injury. Be sure your child has a soft toothbrush.
  • Talk with the doctor before your child gets any vaccines while taking this drug and after your child stops taking it. Vaccine use with this drug may either raise the chance of an infection or make this drug not work as well. Talk with the doctor.
  • If your child has taken this drug and is getting a blood transfusion, talk with your child’s doctor.
  • This drug may affect sperm in males. This may affect being able to father a child later in life. Talk with the doctor.

If your child is or may be sexually active:

  • Have your child use birth control to prevent pregnancy during care and for some time after care ends. Talk with the doctor to see how long your child needs to use birth control after stopping this drug.
  • If your child is a male and has sex with a female who could get pregnant, they must prevent pregnancy during care and for some time after care ends. Talk with the doctor to see how long they must use birth control after your child stops this drug.
  • If your child is a male and his sex partner gets pregnant while he takes this drug or within several months after his last dose, call the doctor right away.

If your child is pregnant:

  • This drug may cause harm to the unborn baby if your child takes it during pregnancy.
  • If your child gets pregnant while taking this drug or within several months after her last dose, call the doctor right away.

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.
  • Signs of infection like fever, chills, very bad sore throat, ear or sinus pain, cough, more sputum or change in color of sputum, pain with passing urine, mouth sores, or wound that will not heal.
  • Signs of bleeding like throwing up blood or throw up that looks like coffee grounds; coughing up blood; blood in the urine; black, red, or tarry stools; bleeding from the gums; vaginal bleeding that is not normal; bruises without a reason or that get bigger; or any bleeding that is very bad or that you cannot stop.
  • Feeling very tired or weak.
  • Dark urine or yellow skin or eyes.
  • Not able to pass urine.
  • Shortness of breath.
  • Chest pain or pressure.
  • Change in eyesight.
  • Feeling agitated.
  • A burning, numbness, or tingling feeling that is not normal.
  • Not able to eat.
  • A skin lump or growth.
  • Change in color or size of a mole.
  • Swelling in the arms or legs.
  • Patients with cancer who take this drug may be at greater risk of getting a bad and sometimes deadly health problem called tumor lysis syndrome (TLS). Call your child’s doctor right away if your child has a fast heartbeat; a heartbeat that does not feel normal; any passing out; trouble passing urine; muscle weakness or cramps; upset stomach, throwing up, loose stools, or not able to eat; or feel sluggish.
  • A very bad brain problem called progressive multifocal leukoencephalopathy (PML) may happen with this drug. It may cause disability or death. Tell the doctor right away if your child has signs like confusion, memory problems, low mood (depression), change in the way your child acts, change in strength on 1 side is greater than the other, trouble speaking or thinking, change in balance, or change in eyesight.
  • A very bad skin reaction (Stevens-Johnson syndrome/toxic epidermal necrolysis) may happen. It can cause very bad health problems that may not go away, and sometimes death. Get medical help right away if your child has signs like red, swollen, blistered, or peeling skin (with or without fever); red or irritated eyes; or sores in the mouth, throat, nose, or eyes.

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 tired or weak.
  • Upset stomach or throwing up.
  • Mouth irritation or mouth sores.
  • Not hungry.
  • Loose stools (diarrhea).
  • Muscle pain.
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.


  • Give this drug with or without food.
  • Have your child swallow whole. Do not let your child chew, break, or crush.
  • Give this drug with a full glass of water.
  • Talk with the doctor to find out what to do if your child throws up after taking a dose of this drug.


  • It is given as an infusion into a vein over a period of time.

All products:

  • This drug is not given every day. Be sure you know how to give it. Talk with the doctor if you have questions.
  • If your child has an upset stomach or loose stools (diarrhea), is throwing up, or is not hungry, talk with the doctor. There may be ways to lower these side effects.

What do I do if my child misses a dose?

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

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


  • Store in the original container at room temperature.
  • Do not freeze.


  • 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



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