Gabapentin
"I have neuropathic pain, seizures and bipolar disorder all which can be treated by Gabapentin.  At first it seemed like I wasn't taking anything but after getting on 3600mg/day it has really improved my life.  My pain is tolerable, the simple-partial seizures are well managed and I am calm all the time.  It took a large dose to work for me but I am glad I tried it.  My only complaint is that if I stand up quickly I get dizzy.  But relative to everything else I don't mind."