postherpetic neuralgia
"I have severe pain from spinal nerve damage in lower back, radiating around my hip area and down my leg.  Had multiple injections with minimal relief. Started Gralise in 2014 and it has been a quality of life changer. I take 1800 mg and have no major side effects.  I have been able to start exercising again-mostly walking-without the intense pain, and I don't limp anymore. The only negative is the pill size is kind of big, but the shape makes it easier to swallow."