I took LDN for ~15 months in doses gradually building up to 4.5mg/day. It sadly did absolutely nothing for me. N=1, obviously. I have textbook post-viral MECFS.
I am impressed that the study below: actually measured something, as opposed to just asking if you feel less tired.
I'm really tired of the subjectivity in so many of these studies about fatigue, PEM etc.
So they actually measured something. It would be interesting to me, to know if I had that issue but nobody measured anything, as usual.