My doctor was trying me on Neurontin for nerve pain. I'd only been on it (tapering slowly upward) a few weeks, and only 3 days at 1800mg/day when I suddenly felt overwhelmed with anxiety and fear. I also experienced a burning sensation in my mouth and throat - food started tasting like pepper. I immediately reduce my dosage and tapered completely off it - probably too quickly. I've been experiencing burning pain as mentioned above as well as lungs, intestinal tract, etc., anxiety, sleeplessness, weakness and sick to my stomache. Anyone else have problems like this? How long did it take to feel well again?