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Primidone (PRI mi done)

Pediatric Medication

Brand Names: U.S.

Mysoline

Brand Names: Canada

Apo-Primidone®

Warning

  • Sometimes drugs are not safe when your child takes them with other drugs. Taking them together can cause bad side effects. This is one of those drugs. Be sure to talk to your child’s doctor about all the drugs your child takes.
  • This drug comes with an extra patient fact sheet called a Medication Guide. Read it with care. Read it again each time this drug is refilled.

What is this drug used for?

  • It is used to help control certain kinds of seizures.

Is it safe for my child to take this drug?

  • Not if your child has an allergy to primidone, phenobarbital, or any other part of this drug.
  • Be sure to let the doctor know if your child has any allergies or side effects to drugs, foods, or dyes. Make sure to tell about the allergy and what signs your child had. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
  • Not if your child has porphyria.

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

  • Keep a list of all your child’s drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your child’s doctor.
  • Do not run out of this drug.
  • This drug may be habit-forming with long-term use.
  • Have your child wear disease medical alert ID (identification).
  • If your child has been taking this drug for many weeks, talk with your child’s doctor before stopping. You may want to slowly stop this drug.
  • Avoid giving your child other drugs and natural products that may slow your child’s actions.
  • If your child has kidney disease, talk with the doctor.
  • If your child has liver disease, talk with the doctor.
  • If your child has lung disease, talk with the doctor. He/she may be more sensitive to this drug.
  • If your child has mental illness, talk with the doctor.
  • Have your child’s blood work checked often. Talk with your child’s doctor.
  • Check all drugs your child is taking with your child’s doctor. This drug may not mix well with some other drugs.
  • 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.

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

  • If any of this news causes you to be worried, any of the unwanted side effects happen, or if your child is not better after taking this drug.
  • 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 your child shows signs of a very bad reaction, call your child’s doctor or the ER right away. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; seizures; swelling of face, lips, tongue, or throat; or if your child is not acting normal.
  • If your child shows signs of low mood (depression), thoughts of killing him/herself, nervousness, emotional ups and downs, thinking that is not normal, anxiety, or lack of interest in life.
  • If your child has trouble breathing.
  • If your child shows signs of very bad dizziness or passes out.
  • If your child has a change in thinking clearly and with logic.
  • If your child has a change in balance.
  • If your child’s seizures are worse or not the same after starting this drug.
  • If your child is feeling very tired or sleepy.
  • If your child is feeling very nervous and excitable.
  • If your child has any bruising or bleeding.
  • If your child gets a rash.
  • If your child’s health problem does not get better or if you think your child’s health problem is worse.

What are some other side effects of this drug?

  • Feeling lightheaded, sleepy, having blurred eyesight, or a change in thinking clearly. Have your child avoid tasks or actions that call for him/her to be alert or have clear eyesight until you see how this drug works.
  • Feeling dizzy. Have your child get up slowly over a few minutes when sitting or lying down. Have your child be extra careful climbing stairs.
  • Upset stomach or throwing up. Many small meals and good mouth care may help. Older children may suck hard, sugar-free candy.

How is this drug best given?

Give this drug as ordered by your child’s doctor. Read and follow the dosing on the label closely.
  • Give as you have been told, even if your child feels well.
  • Give this drug with or without food. Give with food if it causes an upset stomach.
  • Have your child follow the diet and workout plan your child’s doctor told you about.

What do I do if my child misses a dose?

  • 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 or extra doses.
  • Do not change the dose or stop your child’s drug. Talk with your child’s doctor.

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

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

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, pharmacist, or other health care provider.

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.

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