Hi Hip. Any update on this? It sounds as if you've abandoned this approach because of the NAC experiment.
Applied the 0.5% NAC nasal spray once daily for around two weeks, but did not notice much. However, it may be that you have to follow this treatment for a few months before benefits appear. But I am not a good candidate for this, because I have not had any major mold exposure.
If the EDTA causes you PEM and fatigue, wouldn't that suggest you've discovered something central to your illness, and that there may be a possible treatment in it?
It's hard to say why the EDTA caused PEM. It could be that it was absorbed into the brain via this intranasal administration, and caused some adverse effects there.