@Pearshaped my brain fog disappeared completely. Also my body color went from the Cfs greyish back to a normal light red. Means, all my blood vessels opened up again. The skin perfusion went up. But my heart rate exploded to 180-200 just standing up. So it wasnt all just fine. But definitely something i hope some researcher can pick up on. Was one of the most impressive ones.
LDN is tricky because of its narrow effective dosage band. For me, 2.25 mg (sublingually, which is ~30% more effective) had full effect, but 2.0 mg had no effect. Somewhere over 5 mg also stopped working. Other people here reported benefits from really small dosages. Did you try higher and lower dosages of LDN? For me it just blocked neuropathic pain, but it was very effective at that.