I take 1,800 milligrams as well. It does help my pain somewhat (I have small fiber neuropathy). I still have pain though. My neurologist also had a compound pharmacy make me a pain compound. The first one wasn’t strong enough so they made me a stronger one. It’s expedited $170 a pump bottle. It helps but I am never pain free. The Gaberpentin does give me horrible brain fog but I I don’t think I could survive without it.