An amino acid your body converts toward nitric oxide, rounding out the circulation angle.
L-Arginine is an amino acid — a basic building block of protein — that your body uses to produce nitric oxide, the same relaxation signal beet root is aimed at.
Because blood flow matters for both energy and physical performance, L-Arginine is one of the more common ingredients in this entire category.
HorsePeak Gelatin uses the HCl (hydrochloride) form, included as one of six named ingredients rather than a high-dose stand-alone.