This text is for informational purposes only. Please consult a doctor or pharmacist before using any medication. 

Read the information leaflet that comes with the medication.

If after taking Trileptal, a sudden allergic reaction (anaphylaxis) occurs, with symptoms like swelling of the face, tongue, or throat making it difficult to breathe or swallow, or there is wheezing, hives, rash, blistering, or peeling of the skin, call a doctor or 911 right away, or go to an emergency room immediately.

Other severe side effects require urgent attention. These include:

• Swelling of the ankles, feet or lower leg
• Increasing confusion, drowsiness, headaches or difficulties moving the arms or legs
• Signs of severe symptoms affecting the skin or mucous membranes such as blistering, skin peeling and severe allergic reactions
• Fever, sore throat, ulcers in the mouth, inexplicable bruises, reddish or purplish coloring of the skin.
• Flu-like symptoms with jaundice (signs of hepatitis)
• Severe upper abdominal pain, vomiting, loss of appetite (signs of pancreatitis).

In children under four years of age, signs of lethargy, trembling, decreased appetite and irritability, or swollen and painful joints should be referred to a doctor immediately.

Most people who use Trileptal do not experience any adverse side effects. Doctors prescribe this medication because they assess the benefits of such treatment outweigh any likely unwanted effects.

Not all side effects are listed here. If these or other unlisted symptoms persist or worsen, consult a healthcare provider or pharmacist.

Symptoms of epilepsy can include uncontrollable jerking and shaking, known as a seizure. There can be episodes of losing awareness and staring blankly, stiffness, unusual sensations like a rising feeling in the stomach, strange smells or tastes, and tingling in the limbs. Sometimes, a person may lose consciousness and collapse, and later have no memory of the event.

Clinicians use electroencephalography (EEG) tests to detect abnormal electrical activity in the brain and determine the type(s) and source(s) of seizures a patient experiences.