https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3962576/

Comment; LDN has been used for years, though incompletely understood regarding how it works. We know it affects Natural Killer T-Lymphocytes, doesn’t seem to work solely by effects on the CNS opioid receptors. Glial cell activity regulates what happens in the nerve cells all over the brain–good place for LDN to work–reminiscent of homeopathy in terms of concentration & effectiveness…

Jarred Younger,Luke Parkitny, and David McLainAuthor informationArticle notesCopyright and License informationDisclaimerThis article has been cited by other articles in PMC.Go to:

Abstract

Low-dose naltrexone (LDN) has been demonstrated to reduce symptom severity in conditions such as fibromyalgia, Crohn’s disease, multiple sclerosis, and complex regional pain syndrome. We review the evidence that LDN may operate as a novel anti-inflammatory agent in the central nervous system, via action on microglial cells. These effects may be unique to low dosages of naltrexone and appear to be entirely independent from naltrexone’s better-known activity on opioid receptors. As a daily oral therapy, LDN is inexpensive and well-tolerated. Despite initial promise of efficacy, the use of LDN for chronic disorders is still highly experimental. Published trials have low sample sizes, and few replications have been performed. We cover the typical usage of LDN in clinical trials, caveats to using the medication, and recommendations for future research and clinical work. LDN may represent one of the first glial cell modulators to be used for the management of chronic pain disorders.

Dr. Raymond Oenbrink