Gabapentin 1200 mg is the most powerful meditation as compared to other variants. It is used to treat Nerve pain, Partial seizure, Restless leg syndrome, and anxiety. It is helpful for both adults and children. You can take gabapentin at night before sleeping for better effect. Gabapentin is one of the most powerful painkillers. It has some severe and mild effects. Clumsiness, unsteadiness, dizziness, drowsiness, and sleepiness are the common side effects of Gabapentin 1200 mg.