The neurontin isn't going to get rid of the allodynia, just dull the sensations. I think it took 1-2 weeks for me to feel benefit from the neurontin (I believe it has to get into your system and cross the blood/brain barrier). Once the neurontin was effective it still took a couple of months for the allodynia to completely disappear for me (this was after my cervical fusion a year ago). I've been on neurontin 400mg 3/day ever since.