The Complete Gabapentin Guide

What Gabapentin Is Used For

Gabapentin works by modulating calcium channels in the nervous system, reducing the abnormal electrical activity that drives both seizures and chronic pain signals. Clinicians prescribe it across several well-established indications:

• Postherpetic neuralgia — the persistent nerve pain following shingles
• Partial-onset seizures in adults and children over three years old
• Diabetic peripheral neuropathy and other nerve-damage pain syndromes
• Restless legs syndrome (off-label, widely accepted in practice)

Dosage at a Glance

Dosing is highly individualized. For neuropathic pain, therapy typically begins at 300 mg on day one, titrating to an effective range of 1,800–3,600 mg daily in three divided doses. Kidney function directly influences clearance, so renal impairment always requires dose adjustment. Never alter your regimen without guidance from a prescribing clinician.