I'll add my experiences of Klonopin/Clonazepam in case it's helpful for anyone.
Apart from resting and pacing, the only thing that I've ever found helpful is Clonazepam.
The trouble with it is that after a few days your body becomes used to it and builds a tolerance (the same effect as addiction), so that it then becomes unhelpful and you get a withdrawal effect when stopping it (i.e. increased agitation). For this reason I find that the use of Clonazepam is limited.
However, I find that there is a way to get around this, that works for me... I've been taking one quarter of a 0.5mg tablet almost everyday for a couple of years now... so this is a tiny 0.125mg dose.
At this tiny dose, my body does not build up a tolerance and there is no withdrawal effect when i stop taking it.
I find that this dose stabilises my ME, helps me heal, and is extremely useful for a frazzled, agitated brain. It has a mild effect but is very useful over time. I really notice the difference when I am on it, and this has been consistent ever since I discovered it. It doesn't cure the ME or make it go away completely, but I do find that it helps to stabilise it, and it helps me heal (i.e. improves my symptoms over time, as long as I pace).
My ME is quite stable right now, so I don't always take Clonazepam at the moment, but I do if my symptoms are getting worse, or becoming unstable (I seem to be at quite a stable place right now, which is quite a new experience for me - but I don't think this is related to the Clonazepam - I think it's just luck, and maybe a lot of resting and pacing.)
I don't take any other medications or supplements, apart from taking antidepressants when I need them, because I find that nothing else helps my symptoms.