In patients with fibromyalgia, is low-dose naltrexone effective in alleviating pain... (Abstract)

In patients with fibromyalgia, is low-dose naltrexone effective in alleviating pain, and does it decrease use of oral opioids?

Evidence-Based Practice
June 2017
https://journals.lww.com/ebp/Abstract/2017/06000/In_patients_with_fibromyalgia,_is_low_dose.13.aspx

Used alone, low-dose naltrexone modestly reduces pain compared with placebo. No studies have addressed the effect of low-dose naltrexone on oral opioid use in patients with fibromyalgia (SOR: B, single small RCT and single nonrandomized pilot study).