Neuropathic Pain: Relieving nerve pain caused by shingles (postherpetic neuralgia) or diabetes (diabetic neuropathy). Epilepsy: Used as an add-on therapy for partial seizures in adults and children. Restless Legs Syndrome (RLS): Helps reduce the urge to move legs, especially at night. Off-label Uses: Sometimes prescribed for hot flashes, anxiety, or insomnia under medical supervision.