The dosage of Gabapentin depends on the individual.
I’ve read here where people have taken from 100 mg to 3,600 mg. I knew of a man who took 7,000 mg. 3,600 mg is the recommended daily maximum although some people take more. Some doctors don’t give more than 900 mg others think 1,800 should be the maximum needed for Neurophy relief. It’s dependent on your doctor, yourself and your side effects if any. Gabapentin usually has fewer side effects than other anticonvulsant drugs. Gabapentin isn't a very strong seizure medication. The man I knew who took 7,000 mg a day for neuropathy got no relief until he reached 7,000 mg, and then he got substantial relief. Many researchers believe doctors don’t prescribe high enough doses to receive the relief needed. I know my brother took it and when he got to 2,400 mg he noticed slight improvement and when he got to 3,600 mg his improvement was considerably better. I took 3,600 mg but it had no effect on my neuropathy or my seizures.
Best of luck,
Jake