What is the best med or supplement for and overactive sympathetic nervous system that doesn't sedate you? thanks docs!

???: There is such a condition as sympathetic hyperfunction syndrome, which has various manifestations; but the phrase "overactive sympathetic nervous system" is far too vague and imprecise to refer to any valid physiological concept. It sounds like something fanciful you'd hear in a health food store or from a reflexologist. You should repost describing in specific detail what you mean by it.