I've just been chatting to this recovered ME/CFS patient, and found out more details, which are important:
It seems that his long COVID ME/CFS was unusual, in that he was constantly catching colds every 2 or 3 weeks, which hit him very hard, and caused him to become bedbound with illness for a week or so. And just when he started recovering from one cold, and getting out of bed, another would hit.
He thinks these constant colds were setting him back all the time. But the very high-dose melatonin transformed his colds from being severe protracted bedbound situations, into being so mild and short-lived that they are barely noticeable.
Thus he thinks melatonin put his ME/CFS into remission by preventing these constant severe colds which were always setting back his ME/CFS.
So this melatonin treatment might be good for the sort of ME/CFS patients who are always catching colds, and who find these colds hit them very hard, and cause lingering ill effects which constantly set back their ME/CFS.
According to a
poll, most ME/CFS patients are the type who have ramped up immunity, so that they rarely catch colds (Rich Van Konynenburg had a
theory of why this subtype of ME/CFS is immune to colds). But the poll indicates that 15% of patients are the opposite, the type that has weakened immunity that makes them catch colds all the time, and with each cold hitting them extremely hard, with it taking them weeks or months to get back to baseline.
It is for this latter subtype that this melatonin protocol might work.
I have updated the first post of this thread with this new information.
As an aside: for all us regular ME/CFS patients who are afraid of becoming permanently worse as a result of catching COVID, and developing long COVID on top of existing ME/CFS (such worsening has occurred to lots of ME/CFS patients), then this very high-dose melatonin protocol, taken in doses as high as 30-60 mg daily when a new viral infection hits, might be a way of rapidly curtailing the acute COVID infection so that it does not trigger long COVID.
Maybe if even healthy people took this very high-dose melatonin when they catch COVID, it would greatly lower their risk of getting long COVID.