Description Gabapentin is used to treat epilepsy. It’s also taken for nerve pain, which can be caused by different conditions, including diabetes and shingles. Nerve pain can also happen after an injury. In epilepsy, it’s thought that gabapentin stops seizures by reducing the abnormal electrical activity in the brain. Common side effects of gabapentin include: Feeling tired. Dizziness. Headache. Nausea and vomiting. Fever. Difficulty speaking. Recurring infections. Memory loss. Weight gain. usual Adult Dose for Postherpetic Neuralgia: -Initial dose: 300 mg orally on day one, 300 mg orally 2 times day on day two, then 300 mg orally 3 times a day on day three -Titrate up as needed for pain relief -Maximum dose: 1800 mg per day (600 mg orally 3 times a day)
