Ketamine
"I have taken oral ketamine for 17 days. For me it is a miracle drug for neuropathic pain. Started at 10 mg daily by 2.5 mg caps compounded by pharmacy. Side effects are wet mouth or excessive salivation, a dizziness that my body adjusted to quickly, a feeling of two beers or a slight intoxication, mild anxiety.  The reward of a 3 point drop in neuropathic pain level is worth it. I feel my old arthritic pain again much stronger. A 8 as the CRPS specific pain is a 4-5!  Oral metabolizes into norketamine & hydro norketamine 5 times stronger than Ketamine. The iv dosing at high levels does not get this first pass metabolism and levels are higher mg than 15 mg. going to 20 mg after ok from doctor. I recommend patients with severe nerve pain."