Naltrexone has been shown to reduce fibro symptoms at low doses of 4.5 mg per day in small-scale studies conducted by Stanford University researchers. It's a very cheap drug that's used widely to treat alcohol and opioid addiction. Because of this, the drug companies are not likely to fund large-scale testing of this drug on fibro patients. However, doctors can prescribe Naltrexone off-label to fibro patients.
To read a summary of the research data, go to ncbi.nlm.nih.gov/m/pubmed/2...
Patients who are taking opioids should not take Naltroxone because they may experience severe cold turkey reactions.
To watch the YouTube video from Stanford University called "An Update on Fibromyalgia", which mentions this research, go to