About 60% of patients with epilepsy are like me


Partial-onset seizures affect a specific area on one side of the brain. Generalized-onset seizures affect both sides.

Anybody can have a seizure. They may be more likely in people who have had a head injury, brain infection, stroke, or brain tumor. Yet, many times the cause is unknown.

A majority of epilepsy patients suffer from partial-onset seizures

During simple partial-onset seizures, a person remains awake and aware but still experiences an odd movement or sensation. During complex partial-onset seizures, there may be momentary confusion or a brief loss of awareness.

1 IN 26

Number of people in the United States who will be diagnosed with epilepsy.

Epilepsy is usually diagnosed after a person has had at least 2 seizures (or after 1 seizure with a high risk for more) that were not caused by some known medical condition.


Percentage of people with epilepsy who experience partial-onset seizures.

Most partial-onset seizures only last a few seconds or minutes­, but you can't predict how often or how long they will occur.




Certain deficiencies like low levels of the minerals sodium, calcium, and magnesium can trigger a seizure.

Not taking medication

Missing doses of seizure medicine is the most common cause of breakthrough seizures.

Lack of sleep

Not getting enough sleep can increase the intensity and length of seizures.

Flashing/strobing lights

For about 3% of people with epilepsy, exposure to flashing lights at certain intensities can trigger seizures.

Over-the-counter drugs

Some common drugs could trigger a seizure, so it’s important to tell your doctor about all the medicines you may be taking.

Drugs and alcohol

Abusing certain "recreational" drugs, binge drinking, and alcohol withdrawal can trigger a seizure.


Stress can cause trouble sleeping, which is also a seizure trigger.

By avoiding your triggers, you may be able to lessen the chances of having a seizure.



Simple partial-onset seizures, also known as focal-onset aware seizures: you may remain awake and aware but still experience an odd movement or sensation.

Complex partial-onset seizures, also known as focal-onset impaired awareness seizures: there may be momentary confusion or brief loss of consciousness.

Déjà vu

You may experience a sense of déjà vu or smell an odor that isn’t there.

Memory loss

You may lose awareness and not remember events just before or after the seizure.

No movement

You may be aware of your surroundings but unable to move or respond.

Odd movement

You may repeat a gesture, such as making an odd facial movement or picking at your clothes.


Current epilepsy treatment guidelines recommend using monotherapy—just 1 seizure medication—in most cases. There's a downside to taking more than 1 seizure medication.

Risks increase as you add seizure medications

Side effects: There is a potential to have more drug interactions and side effects.

Cost: It is more expensive to take additional seizure medications.

Memory: It may become harder to remember to take all your seizure medications, which may lead to missed doses.


The partial-onset seizure medication your healthcare provider prescribes first can make a difference in reducing seizures or even in becoming seizure-free. Oxcarbazepine, the medicine in once-a-day Oxtellar XR, is one of the medicines recommended by the American Epilepsy Society and American Academy of Neurology.


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We want to help you reach your goal for partial-onset seizure control, so let’s keep in touch. Give us your name and email, and we will keep you updated with useful information on partial-onset seizures and treatment with Oxtellar XR.


Do not take Oxtellar XR if you are allergic to oxcarbazepine, or any of the other ingredients in Oxtellar XR, or to eslicarbazepine acetate.

Oxtellar XR can cause serious side effects, including a low level of sodium in your blood. Symptoms of low blood sodium include nausea, tiredness, lack of energy, headache, confusion, and more frequent or more severe seizures. Similar symptoms that are not related to low sodium may occur from taking Oxtellar XR.

The most common side effects include dizziness, sleepiness, headache, balance problems, tremors, vomiting, double vision, and weakness. These are not all of the possible side effects of Oxtellar XR. For more information, ask your healthcare provider or pharmacist.

Like other antiepileptic drugs, Oxtellar XR may cause suicidal thoughts or actions in a very small number of people, about 1 in 500. Before you take Oxtellar XR, tell your healthcare provider if you have or have had depression, mood problems, or suicidal thoughts or behavior. Call a healthcare provider right away if you have thoughts about suicide or dying, attempts to commit suicide, have new or worse depression or new or worse anxiety, feel agitated or restless, experience panic attacks, trouble sleeping (insomnia), or new or worse irritability, feel or act more aggressive, angry, or violent, act on dangerous impulses, have an extreme increase in activity and talking (mania), or experience other unusual changes in behavior or mood.

Oxtellar XR may also cause allergic reactions or serious problems which may affect organs and other parts of your body like the liver or blood cells. You may or may not have a rash with these types of reactions. Call your healthcare provider right away if you have any of the following: swelling of your face, eyes, lips, or tongue, trouble swallowing or breathing, a skin rash, hives, fever, swollen glands, or sore throat that does not go away or comes and goes, painful sores in the mouth or around your eyes, yellowing of your skin or eyes, unusual bruising or bleeding, severe fatigue or weakness, severe muscle pain, frequent infections, or infections that do not go away. Many people who are allergic to carbamazepine are also allergic to Oxtellar XR. Tell your healthcare provider if you are allergic to carbamazepine.

Before taking Oxtellar XR, tell your healthcare provider about all your medical conditions, including if you have or have had suicidal thoughts or actions, have depression or mood problems, have liver problems, have kidney problems, are allergic to carbamazepine, use birth control medicine, are pregnant or plan to become pregnant, or are breastfeeding or plan to breastfeed. Oxtellar XR passes into breast milk. Talk with your healthcare provider about the best way to feed your baby if you take Oxtellar XR.

Oxtellar XR may harm your unborn baby. Tell your healthcare provider right away if you become pregnant while taking Oxtellar XR. If you use birth control medicine, Oxtellar XR may cause your birth control medicine to be less effective.

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements.

Taking Oxtellar XR with certain other medicines may cause side effects or affect how well they work. Do not start or stop other medicines without talking to your healthcare provider. Especially tell your healthcare provider if you take: carbamazepine, phenobarbital, phenytoin, or birth control medicine.

Do not stop taking Oxtellar XR without talking to your healthcare provider. Stopping Oxtellar XR suddenly can cause serious problems, including seizures that will not stop. Take Oxtellar XR exactly as prescribed.


Oxtellar XR® (oxcarbazepine) extended-release tablets is a prescription medicine used to treat partial-onset seizures in adults and children 6 years of age and older.

Please refer to the full Prescribing Information and Medication Guide for additional important information on Oxtellar XR.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit, or call 1-800-FDA-1088.