An amino acid your body converts toward nitric oxide, supporting blood flow.
L-Arginine is an amino acid your body uses to produce nitric oxide, a molecule that helps blood vessels relax and supports healthy circulation.
Of Vigor Boost's nine ingredients, L-Arginine has one of the stronger modern research bases for its relationship to blood flow specifically.
Vigor Boost includes L-Arginine as part of its 82mg total serving, alongside Horny Goat Weed on the circulation-support side.