I can't remember if I have specifically, but I do remember taking a nitric oxide bodybuilding supplement that a member on here had success with but I abandoned it after a few days. I can't remember why.
@Dysfunkion I agree with you in that the hearts not at fault, it's trying it's best to deal with some problem upstream in the vasculature or something. Probably a combination of a fried ANS, vascular issues, and cell problems. The issue is my heart has been on overdrive for 13 years straight day and night without rest from this bounding pulse. At this point it feels worn out.
Yeah the weather dictates the overall state my body is in but the overall outcome is the same. My heart needs to pump extra hard for some reason (to overcome vascular resistance?).
It's interesting that when you get a bounding pulse it's associated with CNS and immune issues. I'm thinking what if my ANS is just traumatized or something from the day I got ill all those years ago and it's stuck in a loop sending the rest of my body a "its not safe message".
I almost feel like ME patients bodies react to whatever's going wrong by sort of shutting down (PEM) by my body instead "overcomes" the PEM by just pumping blood extra hard around allowing me to do stuff where overwise I'd be laying in bed.