Get as many gabapentins as you need. I take 4 300mg capsules a day, If you need more,speak with your Dr. I have friends that take 10.
Also if you live in a legalized Marijuana State, try some of the active strain creams (a good store will guide you). I had a double transplant, so currently I only take prescribed medications, however with the cream I seldom needed medications. Here in Las Vegas there are Chiropractors that sell you relief, however it's little more than a Tens treatment (be careful it's a temporary treatment).
When the Needles Pain Starts,it totally uncontrollable and sometimes it's also the Burning skin areas - this is very painful and do not tolerate Anyone belittling your pain - and it's also Bad Karma.