Here is an old abstract talking about catecholamine sulfates, which they claim are the predominant form of catecholamines. Apparently, they don't play well with the enzymes that convert dopamine to noradrenaline and noradrenaline to adrenaline. Connect that if you can (and then tell the rest of us)!
To be clear, I am not confusing sulfates and sulfites. If he (Heartfixer doc) positively says that "this is a problem that increases when you take molybdenum," (thus increasing sulfates at the expense of sulfites) then I'm not sure what to say.