What should I watch for?
Visit your doctor or health care professional for regular checks on your progress. Do not stop taking this medicine suddenly. This increases the risk of seizures.
Wear a medical ID bracelet or chain, and carry a card that describes your disease and details of your medicine and dosage times.
The use of this medicine may increase the chance of suicidal thoughts or actions. Pay special attention to how you are responding while on this medicine. Any worsening of mood, or thoughts of suicide or dying should be reported to your health care professional right away.
Rarely, serious skin allergic reactions may occur with this medicine. If you develop a skin rash, redness, itching, peeling skin inside your mouth, swollen glands, or a fever while taking this medicine, contact your health care provider immediately.
Tell your doctor or health care professional right away if you have any change in your eyesight.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this drug affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells.
Women who become pregnant while using this medicine may enroll in the North American Antiepileptic Drug Pregnancy Registry by calling 1-888-233-2334. This registry collects information about the safety of antiepileptic drug use during pregnancy.
Common and Rare Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
decreased urine output
fast or irregular heartbeat
increased in seizure frequency or severity
muscle pain or cramps
swelling of the face, ankles, or hands
swollen, painful, or tender lymph glands in the neck, armpit, or groin
unusual tiredness or weakness
Blistering, peeling, or loosening of the skin
bloating of the abdomen or stomach
changes in behavior
feeling sad or empty
joint or muscle pain
large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
puffiness or swelling of the eyelids or around the eyes, face, lips, or tongue
rapid, shallow breathing
red skin lesions, often with a purple center
sores, ulcers, or white spots in the mouth or on the lips
thoughts or attempts at killing oneself
upper right abdominal or stomach pain
yellow eyes or skin
Incidence not known
black, tarry stools
blood in the urine or stools
decreased awareness or responsiveness
general feeling of tiredness or weakness
loss of consciousness
lower back or side pain
painful or difficult urination
pinpoint red spots on the skin
rapid weight gain
unusual bleeding or bruising
unusual drowsiness, dullness, or feeling of sluggishness
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
sensation of spinning or constant movement
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.