Gabapentin. In the US, Gabapentin (gabapentin systemic) is a member of the drug class gamma-aminobutyric acid analogs and is used to treat Alcohol Withdrawal, Anxiety, Benign Essential Tremor, Bipolar Disorder, Burning Mouth Syndrome, Carpal Tunnel Syndrome, Cluster-Tic Syndrome, Cough, Diabetic Peripheral Neuropathy, Epilepsy, Erythromelalgia. Find patient medical information for Gabapentin Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Gabapentin is approved by the Food and Drug Administration to treat epilepsy and pain related to nerve damage, called neuropathy. Also known by its brand name, Neurontin, the drug acts as a sedative. Learn about Neurontin (Gabapentin) may treat, uses, dosage, side effects, drug interactions, warnings, patient labeling, reviews, and related medications. Find a comprehensive guide to possible side effects including common and rare side effects when taking Gralise (Gabapentin Tablets) for healthcare professionals and consumers. Medscape - Seizure dosing for Neurontin, Gralise (gabapentin), frequency-based adverse effects, comprehensive interactions, contraindications, pregnancy & lactation schedules, and cost information. Gabapentin, also known as Neurontin, is most often prescribed to treat seizures and nerve pain. A side effect many patients experience is sedation, which is why the drug is gaining in popularity among opioid abusers. Pill with imprint 300 mg IG322 is Yellow, Capsule-shape and has been identified as Gabapentin 300 mg. It is supplied by InvaGen Pharmaceuticals, Inc. By mouth. For Adult. Initially 300 mg once daily on day 1, then 300 mg twice daily on day 2, then 300 mg 3 times a day on day 3, alternatively initially 300 mg 3 times a day on day 1, then increased in steps of 300 mg every 2–3 days in 3 divided doses, adjusted according to response; maximum 3.6 g per day. Gabapentin is a prescription drug. It comes as an oral capsule, an immediate-release oral tablet, an extended-release oral tablet, and an oral solution.