What is gabapentin (Neurontin) used for?

Gabapentin is a prescription medication used to treat partial-onset seizures with or without secondary generalization. It is also used to relieve the burning, stabbing pain that can occur after an attack of shingles. This pain is called post-herpetic neuralgia and can last for months, even years. In addition, the extended-release gabapentin tablet (brand name Horizant) is used to treat moderate to severe restless legs syndrome (this is a condition in which there is discomfort and a strong urge to move the legs, especially at night).

How does gabapentin (Neurontin) work?

Gabapentin treats seizures by decreasing the amount of brain activity. In addition, it relieves post-herpetic neuralgia by altering the way the body perceives pain. It is unclear how gabapentin provides relief from symptoms of restless legs syndrome.

What is the dosage of gabapentin (Neurontin)?

Gabapentin is available in 100 mg, 300 mg, and 400 mg capsules; 600 mg and 800 mg tablets; and 250 mg/5 mL oral solution. 

The recommended dose of gabapentin is 300 mg three times a day up to a maximum of 1800 mg per day for post-herpetic neuralgia and epilepsy (partial-onset seizures) in adults and children 12 years of age and older. In children 3-11 years old, the gabapentin dose depends on the child’s body weight. The recommended dose is reached by increasing the dose over approximately 3 days. Your doctor may need to adjust the dose if you have reduced kidney function