Brand Names: US
Brand Names: Canada
- This drug may cause lasting eyesight loss. This loss may be mild or very bad, and it may happen in a lot of patients. It may happen within weeks of starting this drug or at any time while taking it. Talk with the doctor.
- Have an eye exam every 3 months.
- Do not use this drug if you have lasting eyesight loss, are at risk for lasting eyesight loss, or are taking drugs that may cause very bad eye problems.
- Only U.S. patients in the SHARE Program may get this drug.
What is this drug used for?
- It is used to help control certain kinds of seizures.
- It is used to treat infantile seizures.
What do I need to tell my doctor BEFORE I take this drug?
This drug may interact with other drugs or health problems.
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this drug with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
- If you have an allergy to vigabatrin or any other part of this drug.
- If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
What are some things I need to know or do while I take this drug?
- Tell dentists, surgeons, and other doctors that you use this drug.
- Avoid driving and doing other tasks or actions that call for you to be alert or have clear eyesight until you see how this drug affects you.
- Do not stop taking this drug all of a sudden without calling your doctor. You may have a greater risk of seizures. If you need to stop this drug, you will want to slowly stop it as ordered by your doctor.
- This drug may affect certain lab tests. Be sure your doctor and lab workers know you take this drug.
- Nerve problems like burning, numbness, or tingling feelings that are not normal have happened with this drug. It is not known if these nerve problems will go away if this drug is stopped. Talk with the doctor.
- Talk with your doctor before you drink alcohol or use other drugs and natural products that slow your actions.
- If you are 65 or older, use this drug with care. You could have more side effects.
- Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using this drug while you are pregnant.
- Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.
- This drug may cause MRI changes that are not normal in infants. This has not been seen in older children or adults. Talk with your doctor.
What are some side effects that I need to call my 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 doctor or get medical help right away if you have 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.
- A burning, numbness, or tingling feeling that is not normal.
- Chest pain.
- Change in balance.
- Very bad dizziness or passing out.
- Change in thinking clearly and with logic.
- Fever or chills.
- Feeling very tired or weak.
- If seizures are worse or not the same after starting this drug.
- Change in eyesight.
- Loss of eyesight.
- Not able to control eye movements.
- Very bad muscle pain or weakness.
- Pain when passing urine.
- Passing urine often.
- A big weight gain.
- Memory problems or loss.
- Trouble walking.
- Patients who take this drug may be at a greater risk of having thoughts or actions of suicide. The risk may be greater in people who have had these thoughts or actions in the past. Watch people who take this drug closely. Call the doctor right away if signs like low mood (depression), nervousness, restlessness, grouchiness, panic attacks, or changes in mood or actions are new or worse. Call the doctor right away if any thoughts or actions of suicide occur.
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 doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
- Feeling sleepy.
- Hard stools (constipation).
- Sore throat.
- Stuffy nose.
- Feeling tired or weak.
- Not able to sleep.
- Joint pain.
- Loose stools (diarrhea).
- Upset stomach or throwing up.
- Weight gain.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to your national health agency.
How is this drug best taken?
Use this drug as ordered by your doctor. Read and follow the dosing on the label closely.
- Take as you have been told, even if you feel well.
- To gain the most benefit, do not miss doses.
- Take with or without food. Take with food if it causes an upset stomach.
Powder for solution:
- This drug needs to be mixed before use. Follow how to mix as you were told by the doctor.
- Follow how to use as you have been told by your doctor or read the package insert.
- Be sure you know how many packets to use.
- Melt each packet in 2 teaspoons (10 mL) of water.
- After mixing, measure the liquid dose carefully. Use the measuring device that comes with this drug.
- Swallow the mixture right away. Do not store for use at a later time.
- Do not use if the solution is cloudy or has particles.
- Do not use if solution changes color.
- Throw away any part not used after use.
- Ask your doctor what to do if you are not able to take the full dose. Ask your doctor what to do if you throw up after taking this drug.
What do I do if I miss a dose?
- Call the 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.
- 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.
General drug facts
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else’s drugs.
- Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
- Talk with the doctor before starting 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 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.
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
Copyright © 2014 Clinical Drug Information, LLC and Lexi-Comp, Inc.
Last updated: March 16, 2015