Gabapentin capsules are used to treat postherpetic neuralgia in adults and as an adjunctive therapy for partial onset seizures in adults and pediatric patients aged 3 and older. The capsules contain 300mg of gabapentin as the active ingredient and are manufactured by Sun Pharmaceutical Industries Limited. Common side effects include dizziness, somnolence, and peripheral edema. Gabapentin capsules should be stored at room temperature and used with caution during pregnancy.