- Unsafe and sometimes deadly allergic effects with organ failure may happen with this drug. Tell your child’s doctor about any fever, rash, feeling tired, upset stomach, throwing up, loose stools, belly pain, flu-like signs, sore throat, cough, or trouble breathing. Do not restart this drug if your child has had an allergic effect.
- This drug may cause unsafe red blood cell problems called hemolysis and methemoglobinemia. If either of these health problems happens with this drug, do not let your child get this drug again. Talk with the doctor.
- People with an enzyme deficiency called G6PD deficiency may have more chance of getting hemolysis. Do not let your child get this drug if your child has G6PD deficiency. Your child may need to be screened for G6PD deficiency before taking this drug. Talk with the doctor.
- This drug may affect certain lab tests. Tell all of your child’s health care providers and lab workers that your child takes this drug.
- It is used to treat or prevent high uric acid levels during chemo.
- 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 breast-feeding a baby:
- Talk with the doctor if your child is breast-feeding a baby or plans to breast-feed a baby.
- 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 blood work checked as you have been told by the doctor. Talk with the doctor.
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.
- 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, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Signs of methemoglobinemia like a blue or gray color of the lips, nails, or skin; a heartbeat that does not feel normal; seizures; very bad dizziness or passing out; very bad headache; feeling very sleepy; feeling tired or weak; or shortness of breath. This effect is rare but may be deadly if it happens.
- Chest pain or pressure.
- Shortness of breath.
- Very bad dizziness or passing out.
- Feeling very tired or weak.
- Yellow skin or eyes.
- Dark urine.
- Pale skin.
- Swelling in the arms or legs.
- Coughing up blood.
- Upset stomach or throwing up.
- Hard stools (constipation).
- Loose stools (diarrhea).
- Belly pain.
- Sore throat.
- Mouth irritation or mouth sores.
- It is given as an infusion into a vein over a period of time.
- Call your child’s doctor to find out what to do.
- If you need to store this drug at home, talk with your child’s doctor, nurse, or pharmacist about how to store it.
- 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.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
- 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.