I have been on neurontin 1800 a day. Neurotin is slow to work I've been on it a year and two months, it took almost a month to work. See I have been on tramadol, it doesn't cut my pain. I mean its like taking a glass of water is how I feel. I take topamax 400, I take Fentanyl 50mcg and Hydrocodone 7.75mg PRN. You should avoid painkillers especially tramadol at all costs cause your body will build a tolerance. Plus Watch Out for tramadol when added with some anti-dependants it causes serotonin sydrome. OK Im just mumbling now.