Gabapentin is used with other medications to help control seizures in adults and children (3 years of age and older). It is also used to relieve nerve pain associated with shingles (herpes zoster) infection in adults.

OTHER USES: This section contains uses of this drug that are not listed in the approved professional labeling for the drug but that may be prescribed by your health care professional. Use this drug for a condition that is listed in this section only if it has been so prescribed by your health care professional.

Gabapentin may also be used to treat other nerve pain conditions (e.g., diabetic neuropathy, peripheral neuropathy, trigeminal neuralgia).

Take this medication by mouth, with or without food, as directed by your doctor. The dosage is based on your medical condition and response to therapy. During the first few days, your doctor may gradually increase your dose so your body can adjust to the medication. To minimize side effects, take the very first dose at bedtime.

Use this medication regularly in order to get the most benefit from it. This drug works best when the amount of medicine in your body is kept at a constant level. Therefore it is best to take gabapentin at evenly spaced intervals throughout the day and night.

Do not take this medication more often or increase your dose without consulting your doctor. Your condition will not improve any faster and the risk of serious side effects may be increased.

Do not stop taking this medication without consulting your doctor. Some conditions such as seizures may become worse when the drug is abruptly stopped. Your dose may need to be gradually decreased.

Antacids containing aluminum or magnesium may interfere with the absorption of this medication. Therefore it is best to take gabapentin at least 2 hours after taking an antacid.

Inform your doctor if your condition does not improve or worsens.

Drowsiness, dizziness, unsteadiness, fatigue, vision changes, weight gain, nausea, dry mouth, or constipation may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these serious side effects occur: tremor or shaking, swollen arms/legs.

Tell your doctor immediately if any of these unlikely but serious side effects occur: loss of coordination, mental/mood changes.

This medication rarely may cause mood or behavior changes, such as anxiety, agitation, hostility, pressured/rapid speech, or thoughts of suicide. Tell your doctor immediately if you develop unusual (possibly sudden) mood changes.

Tell your doctor immediately if any of these highly unlikely but very serious side effects occur: persistent sore throat/fever/cough, unusual bleeding/bruising, pain/redness of arms or legs, trouble breathing, fast/slow/irregular heartbeat, hearing loss, stomach/abdominal pain.

A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Before taking gabapentin, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease.

This drug may make you dizzy or drowsy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.

Caution is advised when using this drug in the elderly because they may be more sensitive to its effects, especially swollen arms/legs or loss of coordination.

Caution is advised when using this drug in children because they may be more sensitive to its effects, especially the mental/mood changes (e.g., hostility).

This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor.

Gabapentin passes into breast milk. Because the effects of this drug on the nursing infant are unknown, consult your doctor before breast-feeding.

Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with them first.

See also How to Use section.

Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: antacids containing aluminum or magnesium, morphine.

This product can affect the results of certain lab tests for urine protein. Make sure laboratory personnel and your doctors know you use this drug.

This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.

If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US national poison hotline at 1-800-222-1222. Canadian residents should call their local poison control center directly. Symptoms of overdose may include: severe drowsiness, slurred speech, or extreme lethargy.

Do not share this medication with others.

If you miss a dose, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.

Store at room temperature (77 degrees F or 25 degrees C) away from light and moisture. Brief storage between 59-86 degrees F (15-30 degrees C) is permitted. Do not store in the bathroom. Keep all medicines away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.

MEDICAL ALERT: Your condition can cause complications in a medical emergency. For enrollment information call MedicAlert at 1-800-854-1166 (USA), or 1-800-668-1507 (Canada).

Information last revised July 2009 Copyright(c) 2009 First DataBank, Inc.