Gabapentin is an anticonvulsant medication prescribed for a variety of conditions. Learn about its uses, side effects, and what you should know if you've been prescribed this medication. Gabapentin is a prescription medicine used to treat nerve pain, seizures, restless legs syndrome, and other conditions. Learn about side effects, dosage, uses, warnings, interactions, and brand differences. Gabapentin, sold under the brand name Neurontin among others, is an anticonvulsant medication used to treat neuropathic pain and partial seizures of epilepsy. [11][7] Gabapentin is a central nervous system (CNS) depressant and derivative of the inhibitory neurotransmitter GABA. [7] Gabapentin is used to help control partial seizures (convulsions) in the treatment of epilepsy. This medicine cannot cure epilepsy and will only work to control seizures for as long as you continue to take it. Learn about the side effects of gabapentin, from common to rare, for consumers and healthcare professionals. Overview: Gabapentin is used to treat certain people with seizures or nerve pain. Common side effects may include dizziness, sleepiness, or trouble with balance or coordination. Serious side. Gabapentin calms overactive nerves in your body. It prevents and controls seizures and nerve pain. Gabapentin is a prescription drug most commonly prescribed to relieve nerve pain following shingles in adults and the pain of postherpetic neuralgia. Learn about side effects, drug interactions, dosages, warnings, and more. Gabapentin is a prescription medication known as a gamma aminobutyric acid (GABA) analogue. GABA reduces the excitability of nerve cells (neurons) in the brain, which play a role in seizures and the transmission of pain signals. While it can be highly effective and even life-changing for some, gabapentin can also cause side effects, carry risks and is sometimes misused.