Vaporized cannabis, even at low doses, may present an effective option for patients with treatment-resistant neuropathic pain. Cannabis has analgesic efficacy with the low dose being, for all intents and purposes, as effective a pain reliever as the medium dose.
Link: Low Dose Vaporized Cannabis Significantly Improves Neuropathic Pain
Year: 2013
DOI: 10.1016/j.jpain.2012.10.009
Demonstrable efficacy of cannabis for treatment of Pain (Neuropathies, in general) according to the results found in this study.
Vaporized cannabis at medium dose (3.53%), low dose (1.29%), or placebo.