There is this idea (which I believe originated with the late Dr Paul Cheney), that many ME/CFS symptoms may be due to brain inflammation and the high brain glutamate that results.
PR forum member Marco wrote an
in-depth blog on this idea.
So if some of your symptoms are due to high brain glutamate, you might expect that by increasing GABA, it counters the effects of high glutamate.
But because of the major tolerance and withdrawal issues that some people get with benzodiazepines (it cannot be predicted in advance who will suffer tolerance and withdrawal), I avoided benzodiazepines, and experimented with reducing glutamate or the effects of glutamate, with
NAG being the my best discovery.
Other treatments I tried involved high dose
transdermal magnesium cream (listed in
this post of my anti-anxiety thread). The high levels of magnesium you obtain by transdermal application actually serve to partially block the NMDA receptor in the brain (this is the receptor that glutamate binds to), resulting in less glutamate effects.
If we rate the efficacy of NAG as 100% on a scale, then transdermal magnesium I would put at say 10% to 20%.
In my case, the high glutamate I believe I had was causing generalized anxiety disorder, rather than any other symptoms; so I would gauge the efficacy of each supplement by its ability to reduce my anxiety levels.
Other anti-anxiety / anti-glutamate interventions I found effect are listed in the same post (my list of 29 anti-anxiety supplements).
If you have gut issues like IBS, note that gut inflammation can ramp up brain inflammation, so you can also consider some supplements which target the gut. I found
prebiotics like
inulin substantially reduced my anxiety (see
this post), and
turmeric (
not the same as curcumin) reduces gut inflammation also.
Have you looked into kava kava? Unlike benzodiazepines which can desensitize the GABA receptor over time (leading to tolerance and withdrawal), kava actually increases the sensitivity of the GABA receptors over a period of a few weeks. So kava may act as a substitute for benzos.
However, be careful with kava: due to the increased GABA receptor sensitivity, it can make the effects of benzos too strong.