Gabapentin is an anticonvulsant that treats seizures and nerve pain. Doctors often prescribe it for pain after shingles and for diabetic nerve pain.
What Is Gabapentin Used For?
- Nerve pain after shingles (postherpetic neuralgia)
- Diabetic nerve pain
- Partial seizures in epilepsy, as an add-on treatment
- Other nerve pain conditions, as an off-label use
How Does Gabapentin Work?
Gabapentin attaches to calcium channels in nerve cells. This reduces the release of chemicals that send pain signals and trigger seizures.
General Dosage Information
This is general information only. Your doctor sets the right dose for you, so follow your prescription and the label.
- Doctors usually start low, for example 300 mg on day one, 300 mg twice on day two, and 300 mg three times on day three.
- Usual doses are 900 mg to 1,800 mg a day in three doses, and some people take up to 3,600 mg.
- People with kidney problems need lower doses. Never stop it suddenly.
Side Effects of Gabapentin
Common Side Effects
- Dizziness
- Drowsiness
- Swelling in the legs or hands
- Weight gain
- Unsteady walking
Serious Side Effects
Call your doctor or get emergency help if you notice:
- Thoughts of self-harm or sudden mood changes
- Slow or shallow breathing, especially with opioids or in older adults
- Allergic reaction: rash, swelling, or trouble breathing
- A seizure after stopping it
Who Should Be Cautious?
- People with kidney disease
- Older adults, who are more likely to feel dizzy and fall
- People who take opioids or other sedatives
- People with breathing problems such as COPD
- People with a history of drug misuse
Drug Interactions
Tell your doctor and pharmacist about every medicine and supplement you take. Examples of important interactions include:
- Opioids and other sedatives: together they can slow breathing dangerously.
- Antacids with aluminum or magnesium: take gabapentin at least two hours later.
- Alcohol: it adds to drowsiness and dizziness.
Storage and Precautions
- Store it at room temperature, away from heat, light, and moisture.
- Keep it out of the reach of children.
Frequently Asked Questions
Can gabapentin cause dependence?
Some people misuse it, and stopping suddenly can cause withdrawal. Take it only as prescribed.
Can I drive?
Do not drive until you know how it affects you.
How long until it works for nerve pain?
It can take one to two weeks to build up the effect.
Disclaimer: This article is for information only. It is not medical advice. Please talk to your doctor about your own health.