Gabapentin is used together with other medicines to treat partial seizures in adults and children at least 3 years of age. It is also used to treat nerve pain caused by the herpes virus or shingles (herpes zoster) in adults. Use only the brand and formulation of gabapentin that your doctor prescribed. Please review your medicine each time you fill your prescription at the pharmacy, to make sure you have received the correct form. You can buy gabapentin online from an authentic seller.