The gabantin 300mg tablet is an anti-epileptic drug that is used to treat neuropathic pain (nerve pain due to damage or injury to your nerves). Diabetes, cancer, spinal issues, thyroid difficulties, and HIV (Human Immunodeficiency Virus) infection are just a few of the ailments that may cause nerve damage. It may also be used in conjunction with other medications to treat epilepsy. The gabantin 100mg tablet works by lowering aberrant electrical activity in the brain and preventing the transmission of pain signals.