I currently take 3200mg of gabapentin daily, and as of two months ago, was prescribed an additional 450mg of pregabalin daily. I've taken both of these medications for 6 years daily at their full prescribed dose. I was able to taper and cut out the pregabalin fairly easier than I expected over a 6 month period. I still take all of the gabapentin and experience nothing but negative side effects at this point. It's almost completely taken away my ability to have a fluid face to face conversation without forgetting the topic for a few seconds or minutes until I remember it or have to be reminded.
It was initially great recreationally taking it every 3 days which quickly turned into taking it daily. I knew at this point the fun was over and I was just dependent on another medication. That was 5 years ago and despite it being fairly easy to taper to half of my dose, I still take all of it daily. It's more of a psychological addiction at higher doses where I don't really experience withdrawal until I try tapering below 1800mg. Im fully aware of how gabapentin is absorbed and metabolized, rendering higher doses (that are not taken staggered), much less effective.
Gabapentinoids have unfortunately become much more intertwined in my addiction than I had ever imagined. Also to add, I was taking phenibut in 3-4 gram doses on top of my prescribed medication the first two years. The withdrawal from phenibut daily was absolutely almost unbearable to the point I would've gladly taken a ct poppy tea withdrawal over it any day. Ive experienced pretty much every up and down of gabapentinoid use and withdrawal. It's nothing I would wish on anyone.