Gabapentin
"Doesn't drain me at all, quite the opposite--once I got the dosage right I was more awake, motivated and out of the dreaded "fibro fog," perhaps from less pain that seems subtle. This medication does nothing for "as needed" pain, but without realizing it I dropped opiod pain medication use by 75% and enjoy a near-steady sense of calm. Be careful with ambitious dosing, 300 mg at a time really is enough, one too many pills in doctor dosing trials put me right back in a fog. Legs & arms no longer have "pins and needles," my body parts "fall asleep" significantly less, and that sense of widespread nerve pain has diminished. Looses some major points in its 3x a day dosing, I don't skip skip a beat, but nobody wants to be tied to a pill."