Gabapentin Side Effects
What should I watch for?
Visit your doctor or health care professional for regular checks on your progress. You may want to keep a record at home of how you feel your condition is responding to treatment. You may want to share this information with your doctor or health care professional at each visit. You should contact your doctor or health care professional if your seizures get worse or if you have any new types of seizures. Do not stop taking this medicine or any of your seizure medicines unless instructed by your doctor or health care professional. Stopping your medicine suddenly can increase your seizures or their severity.
Wear a medical identification bracelet or chain if you are taking this medicine for seizures, and carry a card that lists all your medications.
You may get drowsy, dizzy, or have blurred vision. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. To reduce dizzy or fainting spells, do not sit or stand up quickly, especially if you are an older patient. Alcohol can increase drowsiness and dizziness. Avoid alcoholic drinks.
Your mouth may get dry. Chewing sugarless gum or sucking hard candy, and drinking plenty of water will help.
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.
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:
Clumsiness or unsteadiness
continuous, uncontrolled, back-and-forth, or rolling eye movements
More common in children
Aggressive behavior or other behavior problems
concentration problems and change in school performance
false sense of well-being
hyperactivity or increase in body movements
rapidly changing moods
reacting too quickly, too emotional, or overreacting
suspiciousness or distrust
Black, tarry stools
depression, irritability, or other mood or mental changes
loss of memory
pain or swelling in the arms or legs
painful or difficult urination
shortness of breath
sores, ulcers, or white spots on the lips or in the mouth
unusual bleeding or bruising
unusual tiredness or weakness
Incidence not known
Abdominal or stomach pain
blistering, peeling, or loosening of the skin
decreased urine output
fast or irregular heartbeat
itching or skin rash
large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
loss of appetite
muscle ache or pain
red skin lesions, often with a purple center
red, irritated eyes
unpleasant breath odor
vomiting of blood
yellow eyes or skin
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:
lack or loss of strength
lower back or side pain
swelling of the hands, feet, or lower legs
trembling or shaking
Less common or rare
bloated or full feeling
body aches or pain
burning, dry, or itching eyes
change in vision
change in walking and balance
clumsiness or unsteadiness
cough producing mucus
decrease in sexual desire or ability
difficulty with breathing
dryness of the mouth or throat
excess air or gas in the stomach or intestines
feeling faint, dizzy, or lightheadedness
feeling of warmth or heat
flushed, dry skin
flushing or redness of the skin, especially on the face and neck
fruit-like breath odor
increased sensitivity to pain
increased sensitivity to touch
noise in the ears
redness or swelling in the ear
redness, pain, swelling of the eye, eyelid, or inner lining of the eyelid
tender, swollen glands in the neck
tightness in the chest
tingling in the hands and feet
unexplained weight loss
weakness or loss of strength
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.