No, I have been taking it for fourteen years. I have neuropathy from a non malignant tumor that the neurosurgeon said had been wrapped around my spinal cord for at least twenty years. It had done a lot of damage...left leg was completely numb and right leg was starting to get that way. Without the Gabapentin I would have a lot of 'jerking' from the nerve damage due not only from the tumor being there so long, but also the nerve and muscle damage from the two surgeries trying to access all of the tumor and having to remove three vertebrae in the process, (rods and screws in their place) I don't know what it would be like to NOT HAVE THE Gabapentin so I just continue to take the 600 mg morning and night along with low dose of Tramadol. That is how I am living my live along with the three Lidocaine patches along my spine. I don't like it....but I do what I have to do to exist with the least pain and jerking I can get. I feel blest that I am still able to see and enjoy my children, grand children and precious great grand children !